EX-99.1 3 ex991201210-krecastdiscops.htm SELECTED FINANCIAL DATA, MANAGEMENTS DISCUSSION AND ANALYSIS OF FINANCIAL CONDIT
Exhibit 99.1
Item 6. Selected Financial Data
The following table presents selected financial data of On Assignment. This selected financial data should be read in conjunction with the consolidated financial statements and notes thereto included under “Financial Statements and Supplementary Data”.

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010 |  | 2009 |  | 2008
|  | (in thousands, except per share data)
Summary Results of Operations: |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 1,177,515 |  |  | $ | 547,639 |  |  | $ | 401,320 |  |  | $ | 360,976 |  |  | $ | 492,950 |
Cost of services |  | 808,979 |  |  | 359,811 |  |  | 261,989 |  |  | 238,202 |  |  | 322,053 |
Gross profit |  | 368,536 |  |  | 187,828 |  |  | 139,331 |  |  | 122,774 |  |  | 170,897 |
Selling, general and administrative expenses |  | 265,568 |  |  | 145,399 |  |  | 120,995 |  |  | 106,306 |  |  | 135,249 |
Amortization of intangible assets |  | 18,016 |  |  | 2,346 |  |  | 2,115 |  |  | 5,991 |  |  | 9,269 |
Operating income |  | 84,952 |  |  | 40,083 |  |  | 16,221 |  |  | 10,477 |  |  | 26,379 |
Interest expense, net |  | (17,168 | ) |  | (2,936 | ) |  | (8,168 | ) |  | (6,442 | ) |  | (9,283 | )
Income before income taxes |  | 67,784 |  |  | 37,147 |  |  | 8,053 |  |  | 4,035 |  |  | 17,096 |
Provision for income taxes |  | 29,373 |  |  | 15,397 |  |  | 3,969 |  |  | 1,873 |  |  | 7,622 |
Income from continuing operations |  | 38,411 |  |  | 21,750 |  |  | 4,084 |  |  | 2,162 |  |  | 9,474 |
Income (loss) from discontinued operations, net of income taxes |  | 4,242 |  |  | 2,547 |  |  | (13,981 | ) |  | 2,545 |  |  | 9,496 |
Net income (loss) |  | $ | 42,653 |  |  | $ | 24,297 |  |  | $ | (9,897 | ) |  | $ | 4,707 |  |  | $ | 18,970 |
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.82 |  |  | $ | 0.59 |  |  | $ | 0.11 |  |  | $ | 0.06 |  |  | $ | 0.27 |
Income (loss) from discontinued operations |  | 0.09 |  |  | 0.07 |  |  | (0.38 | ) |  | 0.07 |  |  | 0.26 |
Net income (loss) |  | $ | 0.91 |  |  | $ | 0.66 |  |  | $ | (0.27 | ) |  | $ | 0.13 |  |  | $ | 0.53 |
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.80 |  |  | $ | 0.58 |  |  | $ | 0.11 |  |  | $ | 0.06 |  |  | $ | 0.26 |
Income (loss) from discontinued operations |  | 0.09 |  |  | 0.06 |  |  | (0.38 | ) |  | 0.07 |  |  | 0.27 |
Net income (loss) |  | $ | 0.89 |  |  | $ | 0.64 |  |  | $ | (0.27 | ) |  | $ | 0.13 |  |  | $ | 0.53 |
Number of shares and share equivalents used to calculate earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | 46,739 |  |  | 36,876 |  |  | 36,429 |  |  | 36,011 |  |  | 35,487 |
Diluted |  | 47,826 |  |  | 37,758 |  |  | 37,050 |  |  | 36,335 |  |  | 35,858 |
Balance Sheet Data (at end of period): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 27,479 |  |  | $ | 17,739 |  |  | $ | 18,409 |  |  | $ | 25,974 |  |  | $ | 46,271 |
Working capital |  | 175,030 |  |  | 74,705 |  |  | 50,596 |  |  | 62,238 |  |  | 91,192 |
Total assets |  | 1,098,021 |  |  | 410,665 |  |  | 341,116 |  |  | 343,462 |  |  | 401,850 |
Long-term liabilities |  | 446,571 |  |  | 107,513 |  |  | 76,579 |  |  | 84,847 |  |  | 129,805 |
Stockholders' equity |  | 532,723 |  |  | 246,743 |  |  | 219,487 |  |  | 226,661 |  |  | 218,514 |

Our working capital at December 31, 2012 was $175.0 million, including $27.5 million in cash and cash equivalents. On May 15, 2012, we acquired Apex. The acquisition was completed by utilizing existing cash and the proceeds from a new senior secured credit facility and the issuance of 14.3 million shares of common stock. For further discussion regarding the new credit facility, see Note 6 to our Consolidated Financial Statements.
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Item 7 - Management’s Discussion and Analysis of Financial Condition and Results of Operations
The following discussion contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements are based upon current expectations, as well as management’s beliefs and assumptions, and involve a high degree of risk and uncertainty. Any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. Statements that include the words “believes,” “anticipates,” “plans,” “expects,” “intends,” and similar expressions that convey uncertainty of future events or outcomes are forward-looking statements. Forward-looking statements include statements regarding our anticipated financial and operating performance for future periods. Our actual results could differ materially from those discussed or suggested in the forward-looking statements herein. Factors that could cause or contribute to these differences or prove our forward-looking statements, by hindsight, to be overly optimistic or unachievable include, but are not limited to actual demand for our services, our ability to attract, train, and retain qualified staffing consultants (which includes our sales and recruiting staff), our ability to remain competitive in obtaining and retaining temporary staffing clients, the availability of qualified contract professionals, our ability to manage our growth efficiently and effectively, continued performance of our information systems and other risks detailed from time to time in our reports filed with the Securities and Exchange Commission, including in our Annual Report on Form 10-K, for the year ended December 31, 2012, as filed with the SEC on March 18, 2013, under the section “Risk Factors.” Other factors also may contribute to the differences between our forward-looking statements and our actual results. In addition, as a result of these and other factors, our past financial performance should not be relied on as an indication of future performance. All forward-looking statements in this document are based on information available to us as of the date we filed our 2012 Annual Report on Form 10-K, and we assume no obligation to update any forward-looking statement or the reasons why our actual results may differ.
OVERVIEW
On Assignment, Inc. is a leading global provider of in-demand, skilled professionals in the growing technology, healthcare, and life sciences sectors. We provide clients with short- and long-term placement of contract, contract-to-hire, and direct hire professionals.
Our Technology service offering consists of two complementary segments uniquely positioned in the marketplace to offer our clients a broad spectrum of information technology, or IT, staffing solutions: Apex and Oxford, which was formerly known as the IT and Engineering segment. Our Apex segment provides mission-critical daily IT operation professionals for contract and contract-to-hire positions to Fortune 1000 and mid-market clients across the United States. Our Oxford segment proactively recruits and delivers high-end information technology, engineering, regulatory, and compliance professionals for consulting assignments and permanent placements across the United States, Canada, and Europe.
Our Life Sciences service offering segment provides locally-based contract life science professionals to clients in the biotechnology, pharmaceutical, food and beverage, medical device, personal care, chemical, automotive, educational and environmental industries. Our contract professionals include chemists, clinical research associates, clinical lab assistants, engineers, biologists, biochemists, microbiologists, molecular biologists, food scientists, regulatory affairs specialists, lab assistants, biostatisticians, drug safety specialists, SAS programmers, medical writers, and other skilled scientific professionals.
Our Physician segment is a leading provider of physician staffing, known as locum tenens, and permanent physician search services. Our Physician segment provides short- and long-term locum tenens services and full-service physician search and consulting services, primarily in the United States, with some locum tenens placements in Australia and New Zealand. We work with physicians in a wide range of specialties, placing them in hospitals, community-based practices and federal, state and local facilities.
Our Healthcare segment offers our healthcare clients local contract professionals, from a number of healthcare, medical, financial and allied occupations. Our Healthcare segment contract professionals include local nurses, health information management professionals, dialysis technicians, surgical technicians, imaging technicians, x-ray technicians, medical technologists, medical assistants, pharmacists, pharmacy technicians, respiratory therapists, phlebotomists, coders, billers, claims processors and collections staff, and dental professionals - including dental assistants, hygienists and dentists and rehabilitation therapists.
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Results of Operations
The following table summarizes selected statement of operations data expressed as a percentage of revenues:

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Revenues |  | 100.0 | % |  | 100.0 | % |  | 100.0 | %
Cost of services |  | 68.7 |  |  | 65.7 |  |  | 65.3 |
Gross profit |  | 31.3 |  |  | 34.3 |  |  | 34.7 |
Selling, general and administrative expenses |  | 22.6 |  |  | 26.6 |  |  | 30.2 |
Amortization of intangible assets |  | 1.5 |  |  | 0.4 |  |  | 0.5 |
Operating income |  | 7.2 |  |  | 7.3 |  |  | 4.0 |
Interest expense, net |  | (1.4 | ) |  | (0.5 | ) |  | (2.0 | )
Income before income taxes |  | 5.8 |  |  | 6.8 |  |  | 2.0 |
Provision for income taxes |  | 2.5 |  |  | 2.8 |  |  | 1.0 |
Income from continuing operations |  | 3.3 | % |  | 4.0 | % |  | 1.0 | %
Income (loss) from discontinued operations, net of income taxes |  | 0.3 | % |  | 0.4 | % |  | (3.5 | )%
Net income (loss) |  | 3.6 | % |  | 4.4 | % |  | (2.5 | )%

RESULTS OF OPERATIONS FOR THE YEAR ENDED DECEMBER 31, 2012 COMPARED WITH THE YEAR ENDED
DECEMBER 31, 2011

|  | Year Ended December 31, |  | Change
|  | 2012 |  | 2011 |  | $ |  | %
Revenues by segment (in thousands): |  |  |  |  |  |  |  |  |
Apex |  | $ | 508,743 |  |  | $ | — |  |  | $ | 508,743 |  |  | — | %
Oxford (formerly IT and Engineering) |  | 345,380 |  |  | 266,742 |  |  | 78,638 |  |  | 29.5 | %
Life Sciences |  | 162,799 |  |  | 155,324 |  |  | 7,475 |  |  | 4.8 | %
Physician |  | 102,679 |  |  | 80,617 |  |  | 22,062 |  |  | 27.4 | %
Healthcare |  | 57,914 |  |  | 44,956 |  |  | 12,958 |  |  | 28.8 | %
|  | $ | 1,177,515 |  |  | $ | 547,639 |  |  | $ | 629,876 |  |  | 115.0 | %

Revenues increased $629.9 million, or 115.0 percent, mainly due to the acquisition of Apex and 22.1 percent year-over-year growth of our other business segments. Apex revenues for the year ended December 31, 2012 were $508.7 million or 43.2 percent of total revenues. Apex was acquired on May 15, 2012 and is reported in the Apex segment.
Oxford segment revenues increased $78.6 million, or 29.5 percent, comprised of a 23.5 percent increase in the average number of contract professionals on assignment, a 4.7 percent increase in average bill rate and a $1.1 million increase in conversion and permanent placement revenue. Revenues for Oxford's Healthcare IT line of business increased by approximately 119 percent, the Engineering - Regulatory and Compliance line of business increased by approximately 39 percent, while the remaining lines of business grew by approximately 17 percent. Due to the limited availability of senior IT and engineering consultants, the demand for our services have increased. We have continued to focus on diversifying this segment across clients and industries and have selectively added staffing consultants necessary for current and future growth. In their September report Staffing Industry Analysts say the US IT Staffing market “will attain an all-time high of $24.9 billion in 2013.”
Life Sciences segment revenues increased $7.5 million, or 4.8 percent, comprised of a 5.0 percent increase in the average number of contract professionals on assignment and a 0.5 percent increase in the average bill rate, which was slightly offset by a $0.8 million decrease in conversion and permanent placement revenue. The increase was achieved despite the termination in early 2012 of a low-margin account that generated approximately $3.1 million in revenue in 2011. The year-over-year increase in revenues was attributable to inclusion of a full year's operating results from Valesta, which was acquired on February 28, 2011 and increased demand from our other service offerings as our clients end markets improved. In 2012, Valesta accounted for $24.5 million in revenues up from $20.4 million in 2011.
Physician segment revenues increased $22.1 million, or 27.4 percent. The increase in Physician segment revenues was attributable to inclusion of a full year's operating results from HCP, which was acquired on July 31, 2011 and a $7.8 million increase in our legacy physician business. HCP accounted for $25.5 million in revenues in 2012 up from $11.2 million in 2011. The increase in legacy physician revenues was due to a 4.3 percent increase in the average number of physicians placed and working, a 4.8 percent increase in average bill rate and a $0.6 million increase in direct hire and conversation fee revenues.
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Healthcare segment revenues increased $13.0 million, or 28.8 percent, comprised of 23.4 percent increase in average number of contract professionals on assignment, a 2.0 percent increase the average bill rate and a $0.3 million increase in conversion and permanent placement revenue. The increase in revenues was attributable to improved economic trends in the healthcare sector, which resulted in a higher number of contract professionals on assignment, open orders and average bill rates. The operating environment continued to demonstrate signs of improvement as economic trends in our end markets showed signs of stabilization and growth as evidenced by year-over-year growth in the number of clients and contractors on billing, average bill rate and billable hours. Although the Healthcare segment remains soft, we continue to see signs of improvement in demand for contract professionals.
Gross Profit and Gross Margins

|  | Year Ended December 31,
|  | 2012 |  | 2011
|  | Gross Profit |  | Gross Margin |  | Gross Profit |  | Gross Margin
Gross Profit by segment (in thousands): |  |  |  |  |  |  |  |
Apex |  | $ | 140,669 |  |  | 27.7 | % |  | $ | — |  |  | — | %
Oxford (formerly IT and Engineering) |  | 122,043 |  |  | 35.3 | % |  | 94,967 |  |  | 35.6 | %
Life Sciences |  | 55,874 |  |  | 34.3 | % |  | 52,643 |  |  | 33.9 | %
Physician |  | 31,455 |  |  | 30.6 | % |  | 25,858 |  |  | 32.1 | %
Healthcare |  | 18,495 |  |  | 31.9 | % |  | 14,360 |  |  | 31.9 | %
|  | $ | 368,536 |  |  | 31.3 | % |  | $ | 187,828 |  |  | 34.3 | %

The year-over-year gross profit increase was primarily due to higher revenues, which was partially offset by a 300 basis point contraction in consolidated gross margin. The decrease in gross margin was primarily attributable to the inclusion of Apex, which has a lower gross margin than our other segments.
Oxford segment gross profit increased $27.1 million, or 28.5 percent, primarily due to a $78.6 million, or 29.5 percent increase in revenues, which was partially offset by a 26 basis point contraction in gross margin. The contraction in gross margin was primarily due to increases in consultant payroll taxes and benefits offset by a $1.1 million increase in direct hire and conversion fee revenue.
Life Sciences segment gross profit increased $3.2 million, or 6.1 percent. The increase in gross profit was primarily due to a 4.8 percent increase in revenues and a 43 basis point expansion in gross margin. The expansion in gross margin was due to a 1.9 percent increase in bill/pay spread, which was partially offset by an increase in travel related expense, an increase in payroll taxes related to higher European payroll tax rates for Valesta employees, and a $0.8 million decrease in direct hire and conversion fee revenue.
Physician segment gross profit increased $5.6 million, or 21.6 percent. The increase in gross profit was due to a $22.1 million, or 27.4 percent increase in revenues, partially offset by a 145 basis point contraction in gross margin. The contraction in gross margin was primarily due to a 7.7 percent decrease in bill/pay spread in part related to a greater concentration of government work at HCP, which has a lower gross margin than the legacy Physician business. The Physician segment also experienced an increase in non-billable expenses, which was partially offset by a $0.5 million favorable actuarial adjustment to our medical malpractice insurance expense.
Healthcare segment gross profit increased $4.1 million. The increase in gross profit was due to a 13.0 million, or 28.8 percent increase in revenues, while gross margin was flat.
Selling, General and Administrative Expenses. Selling, general and administrative (SG&A) expenses include field operating expenses, such as costs associated with our network of staffing consultants and branch offices for each of our five segments, including staffing consultant compensation, rent, other office expenses, marketing and recruiting expenses for our contract professionals. SG&A expenses also include our corporate and branch office support expenses, such as the salaries of corporate operations and support personnel, recruiting and training expenses for field staff, marketing staff expenses, expenses related to being a publicly-traded company and other general and administrative expenses.
For the year ended December 31, 2012, SG&A expenses increased $120.2 million, or 82.6 percent, to $265.6 million from $145.4 million in 2011. The increase in SG&A expenses was primarily due to (i) $88.6 million of SG&A expenses from Apex, which was acquired on May 15, 2012, (ii) $10.2 million in acquisition costs primarily related to the recent acquisition of Apex, and (iii) $20.1 million, or 18.2 percent increase, in compensation and benefits excluding Apex. The increase in compensation and benefits was due to a $8.7 million increase in compensation expenses primarily as a result of headcount additions to support anticipated higher growth in certain segments and increased headcount related to the Valesta and HCP acquisitions, and an $11.4 million increase in bonuses and commissions as a result of increased revenue and the attainment of incentive compensation targets. Total SG&A expenses as a percentage of revenues decreased to 22.6 percent for 2012 compared with 26.6 percent in 2011. Excluding acquisition-related costs of $10.2 million, total SG&A expenses as a percentage of revenues was 21.7 percent for 2012.
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Amortization of Intangible Assets. Amortization of intangible assets was $18.0 million compared with $2.3 million in 2011. The $15.7 million increase was due to amortization related to $104.8 million of identifiable intangible assets acquired related to the Apex acquisition in May 2012. Apex's customer relationships were valued at $92.1 million and are being amortized using an accelerated method.
Interest Expense. Interest expense was $17.2 million compared with $2.9 million in the same period in 2011. This increase was primarily due to higher debt outstanding for the new senior secured credit agreement closed in May 2012 to fund the cash portion of the acquisition of Apex.
Provision for Income Taxes. The provision for income taxes was $29.4 million compared with $15.4 million for the same period in the prior year. The annual effective tax rate was 43.3 percent for 2012 and 41.4 percent for 2011. The increase in the annual effective tax rate in 2012 relates to the addition of Apex and their higher non-deductible expenses as well as valuation allowances on deferred tax assets of certain of our foreign subsidiaries.
Discontinued Operations. The Nurse Travel division, previously included in the Healthcare segment, has been presented as discontinued operations in our Consolidated Statements of Operations and Comprehensive Income for all periods presented. Income from discontinued operations, net of income taxes, was $4.2 million compared with $2.5 million in 2011. This increase was primarily due to higher revenues from staffing services supporting customers experiencing labor disruptions and higher average number of nurses on assignment.
RESULTS OF OPERATIONS FOR THE YEAR ENDED DECEMBER 31, 2011 COMPARED WITH THE YEAR ENDED
DECEMBER 31, 2010

|  | Year Ended December 31, |  | Change
|  | 2011 |  | 2010 |  | $ |  | %
Revenues by segment (in thousands): |  |  |  |  |  |  |  |  |
Oxford (formerly IT and Engineering) |  | $ | 266,742 |  |  | $ | 178,688 |  |  | $ | 88,054 |  |  | 49.3 | %
Life Sciences |  | 155,324 |  |  | 109,495 |  |  | 45,829 |  |  | 41.9 | %
Physician |  | 80,617 |  |  | 73,595 |  |  | 7,022 |  |  | 9.5 | %
Healthcare |  | 44,956 |  |  | 39,542 |  |  | 5,414 |  |  | 13.7 | %
|  | $ | 547,639 |  |  | $ | 401,320 |  |  | $ | 146,319 |  |  | 36.5 | %

Revenues increased $146.3 million, or 36.5 percent, mainly due to growth in all four segments which was partially due to our acquisitions of Cambridge, Sharpstream, Valesta and HCP. Cambridge and Sharpstream were acquired in 2010, Valesta was acquired during the first quarter of 2011 and HCP was acquired on July 31, 2011. Cambridge is reported under the Life Sciences, Oxford and Physician segments; Sharpstream and Valesta are reported under the Life Sciences segment and HCP is reported under the Physician segment. Consolidated revenues for the year ended December 31, 2011 included $48.1 million related to our Cambridge, Sharpstream, Valesta and HCP acquisitions compared with $9.9 million related to the Cambridge and Sharpstream acquisitions in 2010.
Oxford segment revenues increased $88.1 million, or 49.3 percent, comprised of a 41.0 percent increase in the average number of contract professionals on assignment and a 5.8 percent increase in average bill rate. The increase in revenue was also due to a $0.9 million, or 46.4 percent increase in direct hire and conversion fee revenues. Oxford segment revenues for the year ended December 31, 2011 included $4.3 million in revenue from our Cambridge acquisition in April 2010, compared with $2.2 million in 2010. Because many of our placements involve capital projects, we believe that one of the reasons the demand for our services has increased with the progressing economic recovery is that more companies have increased their capital spending.
Life Sciences segment revenues increased $45.8 million, or 41.9 percent, comprised of a $42.4 million increase in staffing revenues and a $3.4 million, or 46.7 percent increase in direct hire and conversion fees. The increase in staffing revenues resulted from a 29.1 percent increase in the average number of contract professionals on assignment and a 7.8 percent increase in average bill rate. The year-over-year increase in revenues was primarily attributable to increased demand for our service offerings as our clients’ end markets have improved in 2011 with the progressing economic recovery and an increase in revenues of $24.8 million from the business acquired in 2010 and 2011.
Physician segment revenues increased $7.0 million, or 9.5 percent, comprised of a 16.5 percent increase in the average number of physicians on assignment, a 1.9 percent decrease in average bill rate and a $0.3 million, or 8.5 percent decrease in direct hire and conversion fees revenue Physician segment revenues for year ended December 31, 2011 included $11.4 million related to our HCP and Cambridge acquisitions. The legacy physician staffing business decreased year over year. We attribute this to continued uncertainty related to healthcare reform, fewer physicians deciding to retire, current economic conditions and high unemployment which have reduced the number of elective procedures and lowered patient census at client facilities.
Revenues for our Healthcare segment increased $5.4 million, or 13.7 percent, comprised of a 5.9 percent increase in average number of contract professionals on assignment and a 2.5 percent increase in the average bill rate. The increase in revenues in the Healthcare segment was attributable to improved economic trends in the healthcare sector, which contributed to the increase in the number of contract professionals on assignment, open orders and average bill rates and supporting customers who were undergoing system conversions. Although the Healthcare segment was soft, we continued to see signs of improvement in demand. The operating environment continued to demonstrate signs of
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improvement as economic trends in our end markets showed signs of stabilization and growth as evidenced by year-over-year growth in the number of contractors and clients on billing, average bill rate, permanent placement activity and billable hours.
Gross Profit and Gross Margins

|  | Year Ended December 31,
|  | 2011 |  | 2010
|  | Gross Profit |  | Gross Margin |  | Gross Profit |  | Gross Margin
Gross Profit by segment (in thousands): |  |  |  |  |  |  |  |
Oxford (formerly IT and Engineering) |  | $ | 94,967 |  |  | 35.6 | % |  | $ | 64,775 |  |  | 36.3 | %
Life Sciences |  | 52,643 |  |  | 33.9 | % |  | 37,776 |  |  | 34.5 | %
Physician |  | 25,858 |  |  | 32.1 | % |  | 23,847 |  |  | 32.4 | %
Healthcare |  | 14,360 |  |  | 31.9 | % |  | 12,933 |  |  | 32.7 | %
|  | $ | 187,828 |  |  | 34.3 | % |  | $ | 139,331 |  |  | 34.7 | %

The year-over-year gross profit increase was primarily due to higher revenues, which was partially offset by a 42 basis point contraction in consolidated gross margin. The contraction in gross margin was primarily due to margin contraction in the Healthcare and Oxford segments.
Oxford segment gross profit increased $30.2 million, or 46.6 percent, primarily due to an $88.1 million, or 49.3 percent, increase in revenues, partially offset by a 65 basis point contraction in gross margin. The contraction in gross margin was in part due to a $4.7 million, or 35.2 percent, increase in other employee expenses, and a benefit in 2010 from employment tax credits related to the HIRE Act, which expired on December 31, 2010, partially offset by a $0.9 million increase in direct hire and conversion fee revenues and a 5.0 percent increase in bill/pay spread.
Life Sciences segment gross profit increased $14.9 million, or 39.4 percent. The increase in gross profit was primarily due to a 41.9 percent increase in revenues, offset by a 61 basis point contraction in gross margin. The contraction in gross margin was mainly due to a benefit in 2010 from employment tax credits related to the HIRE Act, which expired on December 31, 2010, higher European payroll tax rates and holiday pay related to Valesta employees and an increase in unemployment insurance expenses. This contraction was partially offset by a $3.4 million increase in direct hire and conversion fee revenues mainly from our Sharpstream acquisition and an 11.4 percent increase in bill/pay spread.
Physician segment gross profit increased $2.0 million, or 8.4 percent. The increase in gross profit was due to a $7.0 million, or 9.5 percent, increase in revenues, partially offset by a 32 basis point contraction in gross margin. The contraction in gross margin was primarily due to a 7.0 percent decrease in bill/pay spread, in part a result of the acquisition of HCP which has a higher concentration of lower gross margin government business, and a $0.3 million, or 8.5 percent, decrease in direct hire revenue and conversion fee revenues, partially offset by a $1.5 million decrease in medical malpractice insurance expense primarily due to favorable claims development.
Healthcare segment gross profit increased $1.4 million, or 11.0 percent. The increase in gross profit was due to a 5.4 million, or 13.7 percent increase in revenues, partially offset by a 77 basis point contraction in gross margin. The contraction in gross margin was partially offset by a 4.8 percent increase in bill/pay spread.
Selling, General and Administrative Expenses. For the year ended December 31, 2011, SG&A expenses increased $24.4 million, or 20.2 percent, to $145.4 million in 2011. The increase in SG&A expenses was primarily due to a $19.8 million, or 21.9 percent, increase in compensation and benefits. The increase in compensation and benefits was due to (i) an $12.0 million increase in compensation expenses primarily as a result of increased headcount related to the Cambridge, Sharpstream, Valesta and HCP acquisitions and headcount additions to support anticipated high growth in certain segments, (ii) an $7.7 million increase in bonuses and commissions as a result of increased revenue and the anticipated attainment of incentive compensation targets, and (iii) a $0.5 million increase in acquisition costs primarily related to the recent acquisitions. Additionally, non-compensation and benefits related SG&A expenses increased $2.9 million as a result of the Valesta and HCP acquisitions which were both completed in 2011. This increase in SG&A expenses was partially offset by a $1.9 million gain related to the settlements of the Cambridge earn-out and Sharpstream earn-out. Total SG&A expenses as a percentage of revenues decreased to 26.6 percent for the year ended December 31, 2011 compared with 30.2 percent in the same period in 2010.
Interest Expense. Interest expense was $3.0 million for the year ended December 31, 2011 compared with $8.3 million in 2010. This decrease was related to the $2.8 million write-off of unamortized capitalized loan costs in 2010, related to the old borrowing facility that was paid in full in December 2010, as well as lower interest rates in 2011.
Provision for Income Taxes. The provision for income taxes was $15.4 million for the year ended December 31, 2011 compared with $4.0 million in 2010. The annual effective tax rate was 41.4 percent for the year ended December 31, 2011 and 49.3 percent in 2010. The decrease in the tax rate in 2011 was primarily related to the year-over-year increase in income before income taxes for 2011 while permanent differences increased, but not as much as the increase to the income before income taxes, which lowered the annual effective rate. Refer to Note 10 - Income Taxes for detailed information reconciling the statutory tax rate to the effective tax rate.
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Discontinued Operations. Income (loss) from discontinued operations, net of income taxes, was $2.5 million for the year ended December 31, 2011 compared with $(14.0) million in 2010. The loss in 2010 was primarily due to a goodwill impairment charge of $15.4 million related to Nurse Travel. The goodwill impairment charge for Nurse Travel was a result of the decreased fair value of the reporting unit due to lowered growth expectations in the later years because of uncertainty regarding the timing of the recovery of the Nurse Travel industry. Excluding the goodwill impairment charge, income (loss) from discontinued operations, net of income taxes, was $(3.8) million. Revenues in 2011 were higher compared with 2010 due to higher average number of nurses on assignment.
Liquidity and Capital Resources
Our working capital at December 31, 2012 was $175.0 million and our cash and cash equivalents were $27.5 million, of which $8.0 million was held in foreign countries. Cash held in foreign countries is not available to fund domestic operations unless repatriated, which would require the accrual and payment of taxes. We do not intend to repatriate cash held in foreign countries. Our operating cash flows have been our primary source of liquidity and historically have been sufficient to fund our working capital and capital expenditure needs. Our working capital requirements consist primarily of the financing of accounts receivable, payroll expenses and the periodic payments of principal and interest on our loans.
Net cash provided by operating activities was $40.7 million for 2012 compared with $23.4 million for 2011. Cash provided by operating activities in 2012 was primarily driven by income from operations offset by an increase working capital (excluding cash) related to the high growth of the business. Cash provided by operating activities in 2011 was primarily driven by income from operations, an increase in accrued payroll and contract professional pay, offset by an increase in accounts receivable.
Net cash used in investing activities was $363.0 million during 2012 compared with $41.1 million during 2011. Cash paid for acquisitions was $347.7 million and capital expenditures for information technology projects, leasehold improvements and various property and equipment purchases increased $5.9 million to $14.4 million in 2012. We estimate that capital expenditures for 2013 will be approximately $16.0 million.
Net cash provided by financing activities was $331.9 million for 2012, compared with $17.5 million provided by financing activities in 2011. During 2012, principal payments of long-term debt were $173.2 million, versus $20.5 million paid down during 2011. Proceeds from new borrowings on the term loan and line of credit were $513.0 million and $40.5 million in 2012 and 2011, respectively.
Under terms of the credit facility, the term loan facility is repayable at the minimum rate of $2.5 million per quarter and we are required to reduce the term loan by up to 50 percent of our excess cash flow based on leverage ratios, as defined by the agreement for each year end over the next seven years. We are required to maintain certain financial covenants, including a maximum leverage ratio. Our leverage ratio (consolidated funded debt to trailing 12 months EBITDA) is currently limited to no more than 4.25 to 1.00 and reduces over time to 3.00 to 1.00. As of December 31, 2012, the leverage ratio was approximately 2.73 to 1.00 and we were in compliance with all such covenants. Additionally, the agreement, which is secured by substantially all of our assets, provides for certain limitations on our ability to, among other things, incur additional debt, offer loans, and declare dividends. As of December 31, 2012, we had $72.2 million of borrowing available under our credit facility.
We continue to make progress on enhancements to our front-office and back-office information systems. These enhancements include the consolidation of back-office systems across all corporate functions, as well as enhancements to and broader application of our front-office software across all lines of business.
We believe that our working capital as of December 31, 2012, our credit facility and expected operating cash flows will be sufficient to fund future requirements of our debt repayment obligations, accounts payable and related payroll expenses, as well as capital expenditure initiatives for the next twelve months.
Commitments and Contingencies
We lease space for our corporate and branch offices. Rent expense was $13.7 million in 2012, $8.2 million in 2011 and $8.0 million in 2010.
The following table sets forth, on an aggregate basis including discontinued operations, at December 31, 2012, the amounts of specified contractual cash obligations required to be paid in the periods shown (in thousands):

|  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |  | Thereafter |  | Total
Long-term debt obligations |  | $ | 10,000 |  |  | $ | 10,000 |  |  | $ | 10,000 |  |  | $ | 10,000 |  |  | $ | 52,500 |  |  | $ | 334,088 |  |  | $ | 426,588 |
Operating lease obligations |  | 13,545 |  |  | 11,117 |  |  | 9,210 |  |  | 6,386 |  |  | 3,588 |  |  | 6,764 |  |  | 50,610 |
Related party leases |  | 1,266 |  |  | 1,299 |  |  | 1,168 |  |  | 694 |  |  | 175 |  |  | — |  |  | 4,602 |
Total |  | $ | 24,811 |  |  | $ | 22,416 |  |  | $ | 20,378 |  |  | $ | 17,080 |  |  | $ | 56,263 |  |  | $ | 340,852 |  |  | $ | 481,800 |

For additional information about these contractual cash obligations, see Note 9 - Commitments and Contingencies to our Consolidated Financial Statements appearing in Part II, Item 8 of this report. Interest payments related to our bank debt are not set forth in the table above.
7

We have large retention policies for our workers' compensation and medical malpractice exposures. In connection with this program, we pay a base premium plus actual losses incurred up to certain levels and are insured for losses greater than certain levels per occurrence and in the aggregate. The workers' compensation and medical malpractice loss reserves liability is determined based on claims filed and claims incurred but not yet reported. We account for claims incurred but not yet reported based on estimates derived from historical claims experience and current trends of industry data. Changes in estimates, differences in estimates and actual payments for claims are recognized in the period that the estimates changed or payments were made. The workers' compensation and medical malpractice loss reserves liability was $10.3 million and $10.4 million at December 31, 2012 and 2011, respectively. Additionally, we have unused stand-by letters of credit outstanding to secure obligations for workers’ compensation claims with various insurance carriers. The unused stand-by letters of credit at December 31, 2012 and 2011 were $2.8 million and $2.4 million, respectively.
As of December 31, 2012 and 2011, we have an income tax reserve in other long-term liabilities related to our uncertain tax positions of $0.4 million and $0.3 million, respectively.
We are involved in various other legal proceedings, claims and litigation arising in the ordinary course of business. However, based on the facts currently available, we do not believe that the disposition of matters that are pending or asserted will have a material effect on our consolidated financial statements.
We are subject to earn-out obligations entered into in connection with acquisitions. If the acquired businesses meet predetermined targets, we are obligated to make additional cash payments in accordance with the terms of such earn-out obligations. At December 31, 2012, the Company has potential future earn-out obligations of approximately $9.1 million through 2013.
Off-Balance Sheet Arrangements
As of December 31, 2012, the Company had no significant off-balance sheet arrangements other than operating leases and unused stand-by letters of credit outstanding.
Accounting Standards Updates
See Note 1 - Summary of Significant Accounting Policies, to the Consolidated Financial Statements for a discussion of new accounting pronouncements.
Critical Accounting Policies
Our accounting policies are described in Note 1 of the Notes to Consolidated Financial Statements. We prepare our financial statements in conformity with accounting principles generally accepted in the United States, which require us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the year. Actual results could differ from those estimates. We consider the following policies to be most critical in understanding the judgments that are involved in preparing our financial statements and the uncertainties that could impact our results of operations, financial condition and cash flows.
Allowance for Doubtful Accounts and Billing Adjustments. We estimate an allowance for doubtful accounts, as well as an allowance for billing adjustments related to trade receivables based on our analysis of historical collection and adjustment experience. We apply bad debt percentages based on experience to the outstanding accounts receivable balances at the end of the period, as well as analyze specific reserves as needed. Impaired receivables, or portions thereof, are charged off when deemed uncollectible. If we experience a significant change in collections or billing adjustment experience, our estimates of the recoverability of accounts receivable could change by a material amount.
Workers’ Compensation and Medical Malpractice Loss Reserves. We carry retention policies for our workers’ compensation and medical malpractice exposures. In connection with these programs, we pay a base premium plus actual losses incurred, not to exceed certain stop-loss limits. We are insured for losses above these limits, both per occurrence and in the aggregate. The workers' compensation and medical malpractice loss reserves are based upon an actuarial report obtained from a third party and determined based on claims filed and claims incurred but not reported. We account for claims incurred but not yet reported based on estimates derived from historical claims experience and current trends of industry data. Changes in estimates and differences in estimates and actual payments for claims are recognized in the period that the estimates changed or the payments were made.
Contingencies. We record an estimated loss from a loss contingency when information available prior to issuance of our financial statements indicates it is probable that an asset has been impaired or a liability has been incurred at the date of the financial statements, and the amount of the loss can be reasonably estimated. Accounting for contingencies, such as legal settlements, workers’ compensation matters and medical malpractice insurance matters, requires us to use our judgment. While we believe that our accruals for these matters are adequate, if the actual loss from a loss contingency is significantly different than the estimated loss, results of operations may be over or understated.
Income taxes. We account for income taxes using the liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is
8

recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that a portion of the deferred tax asset will not be realized.
We make a comprehensive review of our uncertain tax positions regularly. In this regard, an uncertain tax position represents our expected treatment of a tax position taken in a filed return, or planned to be taken in a future tax return or claim that has not been reflected in measuring income tax expense for financial reporting purposes. In general, until these positions are sustained by the taxing authorities or statutes expire for the year that the position was taken, we do not recognize the tax benefits resulting from such positions and report the tax effects as a liability for uncertain tax positions in our consolidated balance sheets.
Goodwill and Identifiable Intangible Assets. Goodwill and intangible assets with indefinite lives are tested for impairment on an annual basis as of October 31, and for goodwill whenever an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount and for indefinite lived intangibles, if events or changes in circumstances indicate that it is more likely than not that the asset is impaired.
During the quarter ended December 31, 2012, we changed the date of the annual impairment test for goodwill from December 31 to October 31. The change is preferable because it alleviates constraints on accounting resources during the year-end reporting process and better aligns the timing of the assessment with our planning and forecasting process, which occurs primarily in the third quarter. The resulting change in accounting principle related to changing the annual goodwill impairment test date did not delay, accelerate or avoid an impairment charge. Due to significant judgments and estimates that are utilized in the goodwill impairment analysis, we determined it was impracticable to objectively determine, without the use of hindsight, projected cash flows and related valuation estimates as of each October 31 for periods prior to October 31, 2012. As such, we have prospectively applied the change in the annual goodwill impairment test date from October 31, 2012.
Intangible assets with indefinite lives consist of trademarks. We test trademarks for impairment on an annual basis, on October 31. In order to test the trademarks for impairment, we determine the fair value of the trademarks and compare such amount to its carrying value. We determine the fair value of the trademarks using a projected discounted cash flow analysis based on the relief-from-royalty approach. The principal factors used in the discounted cash flow analysis requiring judgment are projected net sales, discount rate, royalty rate and terminal value assumption. The royalty rate used in the analysis is based on transactions that have occurred in our industry. Intangible assets having finite lives are amortized over their useful lives and are tested for recoverability whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Customer relations are amortized using an accelerated method. Contractor relations and non-compete agreements are amortized using the straight-line method. Other than the goodwill impairment in 2010 discussed below, we did not have any impairment of indefinite lived or finite lived intangibles in 2012, 2011, or 2010.
Goodwill is tested for impairment using a two-step process in which the first step compares the fair value of a reporting unit, which is generally an operating segment or one level below the operating segment level which is a business and for which discrete financial information is available and reviewed by segment management, to the reporting unit's carrying value. We determine the fair value of each reporting unit based upon a weighted average calculation using the fair value derived from a discounted cash flow analysis and a market approach analysis. Discounted cash flows are developed for each reporting unit based on assumptions including revenue growth expectations, gross margins, operating expense projections, working capital, capital expense requirements and tax rates. The multi-year financial forecasts for each reporting unit used in the cash flow models considered several key business drivers such as new product lines, historical performance and industry and economic trends, among other considerations. The market approach considers multiples of financial metrics, primarily EBITDA, based on trading multiples of a group of guideline public companies in the staffing industry, which multiples are then applied to the corresponding financial metrics of our reporting units to derive an indication of fair value.
If after performing the first step of the goodwill impairment test, the fair value of the reporting unit does not exceed its carrying value, we perform a second step of the goodwill impairment test for that reporting unit. The second step measures the amount of goodwill impairment by comparing the implied fair value of the respective reporting unit goodwill with the carrying value of that goodwill. The implied fair value of goodwill is determined under the same approach utilized to estimate the amount of goodwill recognized in a business combination. This approach requires we allocate the fair value of the respective reporting unit as calculated in the first step of the goodwill impairment test to the reporting unit assets, including identifiable intangible assets, which typically includes tradenames, staffing databases and customer relationships, and reporting unit liabilities, based on the estimated fair values of such assets and liabilities, with any excess reporting unit fair value representing the implied fair value of goodwill for that reporting unit. The reporting unit goodwill impairment loss, if any, is measured as the amount by which the carrying value of goodwill exceeds the implied fair value of goodwill calculated in the second step of the goodwill impairment test.
The principal factors used in the discounted cash flow analysis requiring judgment are the projected results of operations, discount rate, and terminal value assumptions. The discount rate is determined using the weighted average cost of capital (WACC). The WACC takes into account the relative weights of each component of an average market participant's capital structure (equity and debt). It also considers our risk-free rate of return, equity market risk premium, beta and size premium adjustment. A range of discount rates are utilized across the reporting units based on the entity size of each reporting unit. The terminal value assumptions are applied subsequent to the tenth year of the discounted cash flow model.
We performed step one goodwill impairment tests for each reporting unit as of October 31, 2012 as this is our new annual impairment test date. No impairment charge was recorded for any of the reporting units as of October 31, 2012. The fair value of all reporting units exceeded their respective carrying values by approximately 21 percent or more. The discount rate used in the cash flow analysis ranged between approximately 13 to 15 percent.
9

Based upon the annual goodwill impairment test in 2011, there was no goodwill impairment charge. We recognized a goodwill impairment charge of $15.4 million in the fourth quarter of 2010. Goodwill for the Company's impaired reporting unit, Nurse Travel, with a carrying amount of $15.4 million was written down to the implied fair value of $0 resulting in an impairment charge of $15.4 million, which is included in income (loss) from discontinued operations, net of income taxes.
The discounted cash flows and the resulting fair value estimates of our reporting units are sensitive to changes in assumptions. An increase of less than eight percent in the discount rate of a reporting unit could cause the fair value of certain significant reporting units to be below their carrying value. Changes in the timing of the recovery and the impact on our operations and costs may also affect the sensitivity of the projections including achieving future cost savings resulting from initiatives which contemplate further synergies from system and operational improvements in infrastructure and field support which were included in our forecasts. Ultimately, future changes in these assumptions may impact the estimated fair value of a reporting unit and cause the fair value of the reporting unit to be below its carrying value, which would require a step two analysis and may result in impairment of goodwill.
Due to the many variables inherent in the estimation of a reporting unit's fair value and the relative size of recorded goodwill, changes in assumptions may have a material effect on the results of our impairment analysis. Downward revisions of our forecasts, extended delays in the economic recovery, or a sustained decline of our stock price resulting in market capitalization significantly below book value could lead to an impairment of goodwill or intangible assets with indefinite lives in future periods.
Impairment or Disposal of Long-Lived Assets. We evaluate long-lived assets, other than goodwill and identifiable intangible assets with indefinite lives, for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. An impairment loss is recognized when the sum of the undiscounted future cash flows is less than the carrying amount of the asset, in which case a write-down is recorded to reduce the related asset to its estimated fair value. There was no impairment of long-lived assets as of December 31, 2012, 2011 or 2010.
Business Combinations. The purchase price of an acquisition is allocated to the underlying assets acquired and liabilities assumed based upon their estimated fair values at the date of acquisition. To the extent the purchase price exceeds the fair value of the net identifiable tangible and intangible assets acquired and liabilities assumed, such excess is allocated to goodwill. We determine the estimated fair values after review and consideration of relevant information including discounted cash flows, quoted market prices and estimates made by management. Accordingly, these can be affected by contract performance and other factors over time, which may cause final amounts to differ materially from original estimates. We adjust the preliminary purchase price allocation, as necessary, up to one year after the acquisition closing date if we obtain more information regarding asset valuations and liabilities assumed.
Goodwill acquired in business combinations is assigned to the reporting unit(s) expected to benefit from the combination as of the acquisition date. Acquisition related costs are recognized separately from the acquisition and are expensed as incurred.
Stock-Based Compensation. We record compensation expense for restricted stock awards and stock units based on the fair market value of the awards on the date of grant. Market-based awards, which are based on achievement of targets indexed to our share price, are valued using a Monte Carlo simulation model. Compensation expense for performance-based awards is measured based on the amount of shares ultimately expected to vest, estimated at each reporting date based on management’s expectations regarding the relevant performance criteria. We account for stock options granted and ESPP shares based on an estimated fair market value using a Black-Scholes option valuation model. This methodology requires the use of subjective assumptions, including expected stock price volatility and the estimated life of each award. The fair value of equity-based compensation awards less the estimated forfeitures is amortized over the service period of the award.
10

Item 8. Financial Statements and Supplementary Data
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Stockholders of On Assignment, Inc.
Calabasas, California
We have audited the accompanying consolidated balance sheets of On Assignment, Inc. and subsidiaries (the “Company”) as of December 31, 2012 and 2011, and the related consolidated statements of operations and comprehensive income (loss), stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2012. Our audits also included the financial statement schedule listed in the Index at Item 15. These financial statements and financial statement schedule are the responsibility of the Company's man agement. Our responsibility is to express an opinion on these financial statements and financial statement schedule based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of On Assignment, Inc. and subsidiaries as of December 31, 2012 and 2011, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2012, in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, such financial statement schedule, when considered in relation to the basic consolidated financial statements taken as a whole, presents fairly, in all material respects, the information set forth therein.
As discussed in Note 4 to the consolidated financial statements, on May 15, 2012, the Company acquired all the outstanding shares of Apex Systems, Inc.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company's internal control over financial reporting as of December 31, 2012, based on the criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated March 18, 2013 expressed an unqualified opinion on the Company's internal control over financial reporting.
/s/ Deloitte & Touche LLP
Los Angeles, California
March 18, 2013
(June 13, 2013 as to Note 5)
11

ON ASSIGNMENT, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(In thousands, except share and per share data)

|  | December 31,
|  | 2012 |  | 2011
ASSETS |  |  |  |
Current Assets: |  |  |  |
Cash and cash equivalents |  | $ | 27,479 |  |  | $ | 17,739 |
Accounts receivable, net of $3,970 and $2,777, respectively |  | 243,003 |  |  | 93,925 |
Prepaid expenses |  | 8,839 |  |  | 6,645 |
Deferred income tax assets |  | 10,147 |  |  | 9,271 |
Other |  | 4,289 |  |  | 3,534 |
Total current assets |  | 293,757 |  |  | 131,114 |
Property and equipment, net |  | 26,862 |  |  | 18,057 |
Goodwill |  | 498,356 |  |  | 229,234 |
Identifiable intangible assets, net |  | 263,840 |  |  | 30,206 |
Other |  | 15,206 |  |  | 2,054 |
Total Assets |  | $ | 1,098,021 |  |  | $ | 410,665 |
LIABILITIES AND STOCKHOLDERS’ EQUITY |  |  |  |  |  |
Current Liabilities: |  |  |  |  |  |
Current portion of long-term debt |  | $ | 10,000 |  |  | $ | 5,000 |
Accounts payable |  | 6,810 |  |  | 4,112 |
Accrued payroll and contract professional pay |  | 59,962 |  |  | 24,948 |
Deferred compensation |  | 10,000 |  |  | 1,896 |
Workers’ compensation and medical malpractice loss reserves |  | 10,327 |  |  | 10,401 |
Current portion of accrued earn-outs |  | 6,563 |  |  | 3,488 |
Other |  | 15,065 |  |  | 6,564 |
Total current liabilities |  | 118,727 |  |  | 56,409 |
Deferred income tax liabilities |  | 23,009 |  |  | 14,856 |
Long-term debt, net of current portion |  | 416,588 |  |  | 81,750 |
Accrued earn-outs |  | 1,014 |  |  | 6,368 |
Other long-term liabilities |  | 5,960 |  |  | 4,539 |
Total liabilities |  | 565,298 |  |  | 163,922 |
Commitments and Contingencies |  |  |  |  |  |
Stockholders’ Equity: |  |  |  |  |  |
Preferred Stock, $0.01 par value, 1,000,000 shares authorized, no shares issued |  | — |  |  | — |
Common Stock, $0.01 par value, 75,000,000 shares authorized, 52,960,570 and 37,012,250 issued and outstanding, respectively |  | 530 |  |  | 370 |
Paid-in capital |  | 471,711 |  |  | 229,377 |
Retained earnings |  | 61,687 |  |  | 19,034 |
Accumulated other comprehensive loss |  | (1,205 | ) |  | (2,038 | )
Total stockholders’ equity |  | 532,723 |  |  | 246,743 |
Total Liabilities and Stockholders’ Equity |  | $ | 1,098,021 |  |  | $ | 410,665 |

See notes to consolidated financial statements.
12

ON ASSIGNMENT, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
(In thousands, except per share data)

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Revenues |  | $ | 1,177,515 |  |  | $ | 547,639 |  |  | $ | 401,320 |
Cost of services |  | 808,979 |  |  | 359,811 |  |  | 261,989 |
Gross profit |  | 368,536 |  |  | 187,828 |  |  | 139,331 |
Selling, general and administrative expenses |  | 265,568 |  |  | 145,399 |  |  | 120,995 |
Amortization of intangible assets |  | 18,016 |  |  | 2,346 |  |  | 2,115 |
Operating income |  | 84,952 |  |  | 40,083 |  |  | 16,221 |
Interest expense, net |  | (17,168 | ) |  | (2,936 | ) |  | (8,168 | )
Income before income taxes |  | 67,784 |  |  | 37,147 |  |  | 8,053 |
Provision for income taxes |  | 29,373 |  |  | 15,397 |  |  | 3,969 |
Income from continuing operations |  | 38,411 |  |  | 21,750 |  |  | 4,084 |
Income (loss) from discontinued operations, net of income taxes |  | 4,242 |  |  | 2,547 |  |  | (13,981 | )
Net income (loss) |  | $ | 42,653 |  |  | $ | 24,297 |  |  | $ | (9,897 | )
Basic earnings per common share: |  |  |  |  |  |
Income from continuing operations |  | 0.82 |  | 0.59 |  |  | 0.11 |
Income (loss) from discontinued operations |  | 0.09 |  |  | 0.07 |  |  | (0.38 | )
Net income (loss) |  | $ | 0.91 |  |  | $ | 0.66 |  |  | $ | (0.27 | )
Diluted earnings per common share: |  |  |  |  |  |
Income from continuing operations |  | 0.80 |  | 0.58 |  | 0.11 |
Income (loss) from discontinued operations |  | 0.09 |  |  | 0.06 |  |  | (0.38 | )
Net income (loss) |  | $ | 0.89 |  |  | $ | 0.64 |  |  | $ | (0.27 | )
Number of shares and share equivalents used to calculate earnings (loss) per share: |  |  |  |  |  |  |  |  |
Basic |  | 46,739 |  |  | 36,876 |  |  | 36,429 |
Diluted |  | 47,826 |  |  | 37,758 |  |  | 37,050 |

Reconciliation of net income (loss) to comprehensive income (loss): |  |  |  |  |  |
Net income (loss) |  | $ | 42,653 |  |  | $ | 24,297 |  |  | $ | (9,897 | )
Changes in fair value of derivative, net of income tax of $21 and $227, respectively |  | (21 | ) |  | (380 | ) |  | — |
Foreign currency translation adjustment |  | 854 |  |  | (1,662 | ) |  | (1,122 | )
Comprehensive income (loss) |  | $ | 43,486 |  |  | $ | 22,255 |  |  | $ | (11,019 | )

See notes to consolidated financial statements.
13

ON ASSIGNMENT, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands, except share data)

|  | Common Stock |  | Paid-in Capital |  | Retained Earnings (Accumulated Deficit) |  | Accumulated Other Comprehensive Income (Loss) |  | Total
|  | Shares |  | Amount |  |  |  |
Balance at January 1, 2010 |  | 36,262,810 |  |  | $ | 363 |  |  | $ | 220,082 |  |  | $ | 5,090 |  |  | $ | 1,126 |  |  | $ | 226,661 |
Exercise of common stock options |  | 68,200 |  |  | 1 |  |  | 332 |  |  | — |  |  | — |  |  | 333 |
Stock repurchase and retirement of shares |  | (291,212 | ) |  | (3 | ) |  | (1,783 | ) |  | (214 | ) |  | — |  |  | (2,000 | )
Stock-based compensation expense |  | — |  |  | — |  |  | 7,151 |  |  | — |  |  | — |  |  | 7,151 |
Vesting of restricted stock units and restricted stock awards |  | 359,013 |  |  | 4 |  |  | (1,309 | ) |  | — |  |  | — |  |  | (1,305 | )
Tax deficiency from stock-based compensation |  | — |  |  | — |  |  | (334 | ) |  | — |  |  | — |  |  | (334 | )
Translation adjustments |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,122 | ) |  | (1,122 | )
Net loss |  | — |  |  | — |  |  | — |  |  | (9,897 | ) |  | — |  |  | (9,897 | )
Balance at December 31, 2010 |  | 36,398,811 |  |  | 365 |  |  | 224,139 |  |  | (5,021 | ) |  | 4 |  |  | 219,487 |
Exercise of common stock options |  | 293,893 |  |  | 2 |  |  | 1,722 |  |  | — |  |  | — |  |  | 1,724 |
Employee stock purchase plan |  | 187,036 |  |  | 2 |  |  | 975 |  |  | — |  |  | — |  |  | 977 |
Stock repurchase and retirement of shares |  | (323,361 | ) |  | (3 | ) |  | (1,985 | ) |  | (242 | ) |  | — |  |  | (2,230 | )
Stock-based compensation expense |  | — |  |  | — |  |  | 5,868 |  |  | — |  |  | — |  |  | 5,868 |
Vesting of restricted stock units and restricted stock awards |  | 455,871 |  |  | 4 |  |  | (2,223 | ) |  | — |  |  | — |  |  | (2,219 | )
Tax benefit from stock-based compensation |  | — |  |  | — |  |  | 881 |  |  | — |  |  | — |  |  | 881 |
Fair value adjustment of derivatives, net of income tax |  | — |  |  | — |  |  | — |  |  | — |  |  | (380 | ) |  | (380 | )
Translation adjustments |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,662 | ) |  | (1,662 | )
Net income |  | — |  |  | — |  |  | — |  |  | 24,297 |  |  | — |  |  | 24,297 |
Balance at December 31, 2011 |  | 37,012,250 |  |  | 370 |  |  | 229,377 |  |  | 19,034 |  |  | (2,038 | ) |  | 246,743 |
Exercise of common stock options |  | 968,206 |  |  | 10 |  |  | 7,031 |  |  | — |  |  | — |  |  | 7,041 |
Employee stock purchase plan |  | 154,934 |  |  | 2 |  |  | 1,342 |  |  | — |  |  | — |  |  | 1,344 |
Stock-based compensation expense |  | — |  |  | — |  |  | 9,558 |  |  | — |  |  | — |  |  | 9,558 |
Vesting of restricted stock units and restricted stock awards |  | 520,652 |  |  | 5 |  |  | (5,540 | ) |  | — |  |  | — |  |  | (5,535 | )
Tax benefit from stock-based compensation |  | — |  |  | — |  |  | 4,528 |  |  | — |  |  | — |  |  | 4,528 |
Acquisition of Apex |  | 14,304,528 |  |  | 143 |  |  | 225,415 |  |  | — |  |  | — |  |  | 225,558 |
Fair value adjustment of derivatives, net of income tax |  | — |  |  | — |  |  | — |  |  | — |  |  | (21 | ) |  | (21 | )
Translation adjustments |  | — |  |  | — |  |  | — |  |  | — |  |  | 854 |  |  | 854 |
Net income |  | — |  |  | — |  |  | — |  |  | 42,653 |  |  | — |  |  | 42,653 |
Balance at December 31, 2012 |  | 52,960,570 |  |  | $ | 530 |  |  | $ | 471,711 |  |  | $ | 61,687 |  |  | $ | (1,205 | ) |  | $ | 532,723 |

See notes to consolidated financial statements.
14

ON ASSIGNMENT, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Cash Flows from Operating Activities: |  |  |  |  |  |
Net income (loss) |  | $ | 42,653 |  |  | $ | 24,297 |  |  | $ | (9,897 | )
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |  |  |  |  |  |
Depreciation |  | 6,686 |  |  | 6,505 |  |  | 5,881 |
Amortization of intangible assets |  | 18,016 |  |  | 2,346 |  |  | 2,115 |
Provision for doubtful accounts and billing adjustments |  | (166 | ) |  | 1,127 |  |  | 644 |
Deferred income tax (benefit) provision |  | 4,970 |  |  | 3,748 |  |  | 2,274 |
Stock-based compensation |  | 9,706 |  |  | 6,927 |  |  | 7,749 |
Amortization of deferred loan costs |  | 1,960 |  |  | 460 |  |  | 961 |
Gross excess tax benefits from stock-based compensation |  | (4,638 | ) |  | (1,113 | ) |  | (205 | )
Impairment of goodwill |  | — |  |  | — |  |  | 15,399 |
Workers’ compensation and medical malpractice provision |  | 3,594 |  |  | 3,196 |  |  | 4,310 |
Other |  | (362 | ) |  | (1,765 | ) |  | 1,993 |
Changes in operating assets and liabilities, net of effects of acquisitions: |  |  |  |  |  |  |  |
Accounts receivable |  | (18,604 | ) |  | (25,079 | ) |  | (10,532 | )
Prepaid expenses |  | (1,881 | ) |  | (1,633 | ) |  | (501 | )
Prepaid income taxes |  | 4,047 |  |  | (1,292 | ) |  | 4,223 |
Accounts payable |  | 1,987 |  |  | (1,812 | ) |  | 1,032 |
Accrued payroll and contract professional pay |  | (28,053 | ) |  | 6,400 |  |  | 3,880 |
Workers’ compensation and medical malpractice loss reserves |  | (2,049 | ) |  | (1,467 | ) |  | (3,948 | )
Other |  | 2,831 |  |  | 2,574 |  |  | 1,483 |
Net cash provided by operating activities |  | 40,697 |  |  | 23,419 |  |  | 26,861 |
Cash Flows from Investing Activities: |  |  |  |  |  |  |  |  |
Cash paid for property and equipment |  | (14,354 | ) |  | (8,411 | ) |  | (6,302 | )
Cash paid for acquisitions, net of cash acquired |  | (347,743 | ) |  | (32,818 | ) |  | (10,458 | )
Other |  | (869 | ) |  | 109 |  |  | 179 |
Net cash used in investing activities |  | (362,966 | ) |  | (41,120 | ) |  | (16,581 | )
Cash Flows from Financing Activities: |  |  |  |  |  |  |  |  |
Principal payments of long-term debt |  | (173,163 | ) |  | (20,500 | ) |  | (79,163 | )
Proceeds from term debt |  | 513,000 |  |  | 40,500 |  |  | 68,000 |
Proceeds from stock transactions |  | 8,384 |  |  | 2,701 |  |  | 333 |
Payment of employment taxes related to release of restricted stock awards |  | (2,627 | ) |  | (2,214 | ) |  | (1,955 | )
Gross excess tax benefits from stock-based compensation |  | 4,638 |  |  | 1,113 |  |  | 205 |
Repurchase of common stock |  | — |  |  | (2,230 | ) |  | (2,000 | )
Debt issuance or amendment costs |  | (17,113 | ) |  | (87 | ) |  | (1,938 | )
Payments of other long-term liabilities |  | (1,198 | ) |  | (1,731 | ) |  | (52 | )
Other |  | (43 | ) |  | (43 | ) |  | (44 | )
Net cash provided by (used in) financing activities |  | 331,878 |  |  | 17,509 |  |  | (16,614 | )
Effect of exchange rate changes on cash and cash equivalents |  | 131 |  |  | (478 | ) |  | (1,231 | )
Net Increase (Decrease) in Cash and Cash Equivalents |  | 9,740 |  |  | (670 | ) |  | (7,565 | )
Cash and Cash Equivalents at Beginning of Year |  | 17,739 |  |  | 18,409 |  |  | 25,974 |
Cash and Cash Equivalents at End of Year |  | $ | 27,479 |  |  | $ | 17,739 |  |  | $ | 18,409 |

15

Supplemental Disclosure of Cash Flow Information |  |  |  |  |  |  |  |  |
Cash paid for: |  |  |  |  |  |  |  |  |
Income taxes |  | $ | 33,915 |  |  | $ | 16,163 |  |  | $ | (2,578 | )
Interest |  | $ | 14,722 |  |  | $ | 2,659 |  |  | $ | 5,478 |
Acquisitions: |  |  |  |  |  |
Goodwill |  | $ | 266,788 |  |  | $ | 30,504 |  |  | $ | 10,458 |
Identifiable intangible assets acquired |  | 251,555 |  |  | 7,726 |  |  | 1,761 |
Net tangible assets acquired |  | 54,958 |  |  | 4,934 |  |  | — |
Fair value of assets acquired, net of cash received |  | $ | 573,301 |  |  | $ | 43,164 |  |  | $ | 12,219 |
Non-Cash Investing and Financing Activities: |  |  |  |  |  |
Equity consideration for acquisition |  | $ | 225,558 |  |  | $ | — |  |  | $ | — |
Payable for employment taxes withheld related to release of restricted stock awards |  | $ | 2,907 |  |  | $ | — |  |  | $ | 96 |
Accrued earn-out payments |  | $ | — |  |  | $ | 10,346 |  |  | $ | 3,700 |
Acquisition of property and equipment through accounts payable |  | $ | 369 |  |  | $ | 324 |  |  | $ | 383 |

See notes to consolidated financial statements.
16

ON ASSIGNMENT, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
1. Summary of Significant Accounting Policies.
Principles of Consolidation. The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated.
Use of Estimates. The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Revenue Recognition. Revenues from contract assignments, net of sales adjustments and discounts, are recognized when earned, based on hours worked by the Company’s contract professionals on a weekly basis. Conversion and direct hire fees are recognized when employment candidates begin permanent employment. The Company records a sales allowance against consolidated revenues, which is an estimate based on historical billing adjustment experience. The sales allowance is recorded as a reduction to revenues and an increase to the allowance for billing adjustments. The billing adjustment reserve includes an allowance for fallouts. Fallouts are direct hire and conversion fees that do not complete the contingency period, which is typically 90 days or less. The Company includes reimbursed expenses, in revenues and the associated amounts of reimbursable expenses in cost of services.
The Company records revenues on a gross basis as a principal or on a net basis as an agent depending on the arrangement. The key indicators as to whether it acts as a principal or an agent are whether the Company (i) has the direct contractual relationships with its customers, (ii) bears the risks and rewards of the transactions, and (iii) has the discretion to select the contract professionals and establish their price.
Income Taxes. Income taxes are accounted for using the liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that a portion of the deferred tax asset will not be realized.
The Company makes a comprehensive review of its uncertain tax positions regularly. An uncertain tax position represents the Company’s expected treatment of a tax position taken in a filed return, or planned to be taken in a future tax return or claim that has not been reflected in measuring income tax expense for financial reporting purposes. In general, until these positions are sustained by the taxing authorities or statutes expire for the year that the position was taken, the Company does not recognize the tax benefits resulting from such positions and reports the tax effects as a liability for uncertain tax positions.
Foreign Currency Translation. The functional currency of the Company’s foreign operations is their local currency, and as such, their assets and liabilities are translated into U.S. dollars at the rate of exchange in effect on the balance sheet date. Revenue and expenses are translated at the average rates of exchange prevailing during each monthly period. The related translation adjustments are recorded as cumulative foreign currency translation adjustments in accumulated other comprehensive income as a separate component of stockholders’ equity. Gains and losses resulting from foreign currency transactions, which are not material, are included in Selling, general and administrative (SG&A) expenses in the Consolidated Statements of Operations and Comprehensive Income (Loss).
Cash and Cash Equivalents. The Company considers all highly liquid investments with a maturity of three months or less on the date of purchase to be cash equivalents.
Allowance for Doubtful Accounts and Billing Adjustments. The Company estimates an allowance for doubtful accounts and an allowance for billing adjustments related to trade receivables based on an analysis of historical collection and billing adjustment experience. The Company applies bad debt percentages based on experience to the outstanding accounts receivable balances at the end of the period, as well as analyzes specific reserves as needed. Impaired receivables, or portions thereof, are written-off when deemed uncollectible.
Property and Equipment. Property and equipment are stated at cost. Depreciation and amortization are provided using the straight-line method over the estimated useful lives of the related assets, generally three to five years. Leasehold improvements are amortized over the shorter of the life of the related asset or the remaining term of the lease. Costs associated with customized internal-use software systems that have reached the application development stage and meet recoverability tests are capitalized. Such capitalized costs include external direct costs utilized in developing or obtaining the applications and payroll and payroll-related expenses for employees who are directly associated with the application development.
Goodwill and Identifiable Intangible Assets. Goodwill and intangible assets with indefinite lives are tested for impairment on an annual basis as of October 31, and for goodwill whenever an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount and for indefinite lived intangibles, if events or changes in circumstances indicate that it is more likely than not that the asset is impaired.
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During the quarter ended December 31, 2012, the Company changed the date of the annual impairment test for goodwill from December 31 to October 31. The change is preferable because it alleviates constraints on accounting resources during the year-end financial statement close and reporting process and better aligns the timing of the assessment with our planning and forecasting process, which occurs primarily in the third quarter. The change in accounting principle related to the annual goodwill impairment test date did not delay, accelerate or avoid an impairment charge. Due to significant judgments and estimates that are utilized in the goodwill impairment analysis, the Company determined it was impracticable to objectively determine, without the use of hindsight, projected cash flows and related valuation estimates as of each October 31 for periods prior to October 31, 2012. As such, the Company has prospectively applied the change in the annual goodwill impairment test date from October 31, 2012.
Intangible assets with indefinite lives consist of trademarks. The Company tests trademarks for impairment on an annual basis, on October 31. In order to test the trademarks for impairment, the Company determines the fair value of the trademarks and compares such amount to its carrying value. The fair value of the trademarks is determined using a projected discounted cash flow analysis based on the relief-from-royalty approach. The principal factors used in the discounted cash flow analysis requiring judgment are projected net sales, discount rate, royalty rate and terminal value assumption. The royalty rate used in the analysis is based on transactions that have occurred in our industry. Intangible assets having finite lives are amortized over their useful lives and are tested for recoverability whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Customer relations are amortized using an accelerated method. Contractor relations and non-compete agreements are amortized using the straight-line method. Other than the goodwill impairment in 2010 discussed below, we did not have any impairment of indefinite lived or finite lived intangibles in 2012, 2011, or 2010.
Goodwill is tested for impairment using a two-step process in which the first step compares the fair value of a reporting unit, which is generally an operating segment or one level below the operating segment level, which is a business and for which discrete financial information is available and reviewed by segment management, to the reporting unit's carrying value. The second step measures the amount of impairment by comparing the implied fair value of the respective reporting unit's goodwill with the carrying value of that goodwill. The goodwill impairment loss is measured by the amount the carrying value of goodwill exceeds the implied fair value of goodwill.
The Company performed the step one goodwill impairment tests for each reporting unit as of October 31, 2012 as this is the annual impairment test date. No impairment charge was recorded for any of the reporting units as of October 31, 2012. Based upon the annual goodwill impairment test in 2011, there was no goodwill impairment charge. The Company recognized a goodwill impairment charge of $15.4 million in the fourth quarter of 2010. Goodwill for the Company's impaired reporting unit, Nurse Travel, with a carrying amount of $15.4 million was written down to the implied fair value of $0 resulting in an impairment charge of $15.4 million, which is included in income (loss) from discontinued operations, net of income taxes.
Impairment or Disposal of Long-Lived Assets. The Company evaluates long-lived assets, other than goodwill and identifiable intangible assets with indefinite lives, for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. An impairment loss is recognized when the sum of the undiscounted future cash flows is less than the carrying amount of the asset, in which case a write-down is recorded to reduce the related asset to its estimated fair value.
Workers’ Compensation and Medical Malpractice Loss Reserves. The Company carries retention policies for its workers’ compensation liability and medical malpractice liability exposures. In connection with these programs, the Company pays a base premium plus actual losses incurred, not to exceed certain stop-loss limits. The Company is insured for losses above these limits, both per occurrence and in the aggregate. The workers' compensation and medical malpractice loss reserves are based upon an actuarial report obtained from a third party and determined based on claims filed and claims incurred but not reported. The Company accounts for claims incurred but not yet reported based on estimates derived from historical claims experience and current trends of industry data. Changes in estimates and differences in estimates and actual payments for claims are recognized in the period that the estimates changed or the payments were made.
Contingencies. The Company records an estimated loss from a loss contingency when information available prior to issuance of its financial statements indicates it is probable that an asset has been impaired or a liability has been incurred at the date of the financial statements, and the amount of the loss can be reasonably estimated. Accounting for contingencies, such as legal settlements, workers’ compensation matters and medical malpractice insurance matters, requires the Company to use judgment.
Business Combinations. The purchase price of an acquisition is allocated to the underlying assets acquired and liabilities assumed based upon their estimated fair values at the date of acquisition. To the extent the purchase price exceeds the fair value of the net identifiable tangible and intangible assets acquired and liabilities assumed, such excess is allocated to goodwill. The Company determines the estimated fair values after review and consideration of relevant information including discounted cash flows, quoted market prices and estimates made by management. Accordingly, these can be affected by contract performance and other factors over time, which may cause final amounts to differ materially from original estimates. The Company adjusts the preliminary purchase price allocation, as necessary, up to one year after the acquisition closing date if it obtains more information regarding asset valuations and liabilities assumed.
Goodwill acquired in business combinations is assigned to the reporting unit(s) expected to benefit from the combination as of the acquisition date. Acquisition related costs are recognized separately from the acquisition and are expensed as incurred.
Stock-Based Compensation. The Company records compensation expense for restricted stock awards and stock units based on the fair market value of the awards on the date of grant. Market-based awards, which are based on achievement of targets indexed to the Company’s share price, are valued using a Monte Carlo simulation model. Compensation expense for performance-based awards is measured based on
18

the amount of shares ultimately expected to vest, estimated at each reporting date based on management’s expectations regarding the relevant performance criteria. The Company accounts for stock options granted and ESPP shares based on an estimated fair market value using a Black-Scholes option valuation model. This methodology requires the use of subjective assumptions including expected stock price volatility and the estimated life of each award. The fair value of equity-based compensation awards less the estimated forfeitures is amortized over the vesting period of the award.
Concentration of Credit Risk. Financial instruments that potentially subject the Company to credit risks consist primarily of cash, cash equivalents and trade receivables. The Company places its cash and cash equivalents in low risk investments with quality credit institutions and limits the amount of credit exposure with any single institution above FDIC insured limits. Concentration of credit risk with respect to accounts receivable is limited because of the large number of geographically dispersed customers, thus spreading the trade credit risk. The Company performs ongoing credit evaluations to identify risks and maintains an allowance to address these risks.
Derivative Instruments. The Company utilizes derivative financial instruments to manage interest rate risk. The Company does not use derivative financial instruments for trading or speculative purposes, nor does it use leveraged financial instruments.
Advertising Costs. Advertising costs, which are expensed as incurred, were $4.9 million in 2012, $2.9 million in 2011, and $2.8 million in 2010, and are included in SG&A expenses.
Reclassifications. Certain prior period amounts have been reclassified to conform to the current period financial statement presentation. The reclassifications relate to the required presentation of income from discontinued operations during the years ended December 31, 2012, 2011, and 2010. Please refer to Note 5 for further details. All such reclassifications do not affect net income as presented in previous years.
2. Accounting Standards Updates.
In February 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (ASU 2013-02). Under ASU 2013-02, an entity is required to provide information about the amounts reclassified out of Accumulated Other Comprehensive Income (AOCI) by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income, but only if the amount reclassified is required to be reclassified in its entirety in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. ASU 2013-02 does not change the current requirements for reporting net income or other comprehensive income in the financial statements. ASU 2013-02 is effective for us on January 1, 2013.
In July 2012, the FASB issued Accounting Standards Update No. 2012-02, Intangibles-Goodwill and Other (Topic 350) — Testing Indefinite-Lived Intangible Assets for Impairment (ASU 2012-02), allowing entities the option to first assess qualitative factors to determine whether it is necessary to perform the quantitative impairment test. If the qualitative assessment indicates it is more-likely-than-not that the fair value of an indefinite lived intangible asset is less than its carrying amount, the quantitative impairment test is required. Otherwise, no testing is required. ASU 2012-02 is effective for the Company in the period beginning January 1, 2013. The adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements.
In December 2011, the FASB issued FASB ASU No. 2011-11, Balance Sheet (Topic 210)—Disclosures about Offsetting Assets and Liabilities. ASU 2011-11 requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. Entities are required to disclose both gross and net information about these instruments. ASU 2011-11 is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements.
In September 2011, the FASB issued ASU No. 2011-08, Testing Goodwill for Impairment (Topic 350) — Intangibles—Goodwill and Other (ASU 2011-08), to allow entities to use a qualitative approach to test goodwill for impairment. ASU 2011-08 permits an entity to first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If so, it is necessary to perform the currently prescribed two-step goodwill impairment test. Otherwise, the two step goodwill impairment test is not required. ASU 2011-08 was effective for the Company in the first quarter of fiscal 2012 and earlier adoption was permitted. The adoption of ASU 2011-08 did not have a material impact on the consolidated financial statements.
In June 2011, the FASB issued ASU No. 2011-05, Presentation of Comprehensive Income (Topic 220) — Comprehensive Income (ASU 2011-05), to require an entity to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. ASU 2011-05 eliminates the option to present the components of other comprehensive income as part of the statement of equity. ASU 2011-05 was effective for the Company in the first quarter of fiscal 2012 and was applied retrospectively. In December 2011, the FASB issued ASU 2011-12, Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05, which defers certain aspects of ASU 2011-05 related to the presentation of reclassification adjustments. The adoption of ASU 2011-05 only impacted the presentation of the consolidated financial statements.
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In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards (Topic 820) — Fair Value Measurement (ASU 2011-04), to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. Generally Accepted Accounting Principles and International Financial Reporting Standards. ASU 2011-04 changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements. ASU 2011-04 became effective for the Company in the first quarter of fiscal 2012; see Note 15 - Fair Value Measurements for required disclosures.
3. Property and Equipment.
Property and equipment at December 31, 2012 and 2011 consisted of the following (in thousands):

|  | 2012 |  | 2011
Furniture, fixtures and equipment |  | $ | 6,891 |  |  | $ | 5,776 |
Computers and related equipment |  | 6,918 |  |  | 5,414 |
Computer software |  | 32,871 |  |  | 27,306 |
Leasehold improvements |  | 5,417 |  |  | 4,633 |
Work-in-progress |  | 9,937 |  |  | 4,751 |
|  | 62,034 |  |  | 47,880 |
Less -- accumulated depreciation and amortization |  | (35,172 | ) |  | (29,823 | )
|  | $ | 26,862 |  |  | $ | 18,057 |

Depreciation and amortization expense related to property and equipment, which totaled $6.6 million in 2012, $5.5 million in 2011 and $4.8 million in 2010, is included in SG&A expenses.
The Company has capitalized costs related to its various technology initiatives. The net book value of the property and equipment related to software development was $12.1 million as of December 31, 2012 and $8.5 million as of December 31, 2011, which includes work-in-progress of $7.5 million and $3.9 million, respectively.
4. Acquisitions.
On May 15, 2012, the Company acquired all of the outstanding shares of Apex Systems, Inc., a privately-owned provider of information technology staffing headquartered in Richmond, Virginia. The primary reason for the acquisition was to expand the Company's information technology staffing services. The purchase price totaled approximately $610.8 million, comprised of $385.0 million paid in cash at closing, $0.3 million paid in the third quarter related to the net working capital adjustments, and 14.3 million shares of common stock of the Company issued to the holders of shares of common stock and options to purchase common stock of Apex immediately prior to the effective time of the merger. Acquisition costs related to this transaction totaled approximately $9.8 million and were expensed in 2012. Goodwill and the identifiable intangible assets are deductible for tax purposes. The results of operations of Apex have been combined with those of the Company since the acquisition date. Apex revenues and net loss included in the Statement of Operations for the year-ended December 31, 2012 were $508.7 million and $(7.3) million, respectively.
On July 31, 2011, the Company acquired all of the outstanding shares of HealthCare Partners, Inc. (HCP), a privately-owned provider of physician staffing headquartered in Atlanta, Georgia. The primary reasons for the acquisition were to expand the Physician segment business operations geographic coverage and to leverage the Company’s infrastructure. The purchase price for HCP was approximately $19.1 million comprised of $15.7 million in cash paid at closing and potential future earn-out consideration of $3.4 million (the maximum earn-out opportunity is capped at $3.7 million) based on estimated financial performance of HCP through 2013. Acquisition costs of approximately $57,000 were expensed in 2011. The Company discontinued the use of the HCP tradename during 2012. Go odwill is deductible for tax purposes. The results of operations for the acquisition have been combined with those of the Company since the acquisition date.
On February 28, 2011, the Company acquired all of the outstanding shares of Warphi N.V. and its subsidiaries (collectively, Valesta), a privately-owned provider of specialized clinical research staffing headquartered in Belgium. The primary reasons for the acquisition were to expand the Life Sciences business operations and to leverage the Company’s infrastructure. The purchase price for Valesta totaled $23.7 million, comprised of $16.8 million in cash paid at closing and potential future earn-out consideration of $6.9 million (the maximum earn-out is capped at a Euro value of €5.0 million or approximately $6.6 million at December 31, 2012 exchange rates) based on estimated financial performance of Valesta through 2013. Acquisition costs of approximately $0.4 million were expensed in 2011. Goodwill is not deductible for tax purposes. The results of operations for the acquisition have been combined with those of the Company since the acquisition date.
On July 19, 2010, the Company acquired all of the outstanding shares of Sharpstream Holdings Limited (Sharpstream), a privately-owned provider of search services for executives to middle managers in the life sciences sector. The primary reasons for the Sharpstream acquisition were to expand our Life Sciences business operations, further expand our global presence and to leverage the Company’s infrastructure. The purchase price totaled $8.6 million, comprised of $7.2 million in cash paid at closing, plus potential future earn-out consideration of up to $1.4 million. Acquisition costs of $0.1 million related to the purchase were expensed in 2010. Goodwill is not
20

deductible for tax purposes. The results of operations for the acquisition have been combined with those of the Company since the acquisition date.
On April 16, 2010, the Company acquired all of the outstanding shares of The Cambridge Group Ltd. and Cambridge Contract Staffing Group, Inc. (Cambridge), a Connecticut-based privately-held provider of specialized staffing services. The primary reasons for the Cambridge acquisition were to expand our Life Sciences, Oxford, and Physician business operations and to leverage the Company’s infrastructure. The purchase price totaled $7.6 million, comprised of $5.3 million in cash paid at closing, plus potential future earn-out consideration of up to $2.3 million. Acquisition costs of $0.1 million related to the purchase were expensed in 2010. Goodwill is not deductible for tax purposes. The results of operations for the acquisition have been combined with those of the Company since the acquisition date.
Assets and liabilities of the acquired companies were recorded at their estimated fair values at the dates of acquisition. The excess purchase price over the fair value of net tangible assets and identifiable intangible assets acquired has been allocated to goodwill. The fair value assigned to identifiable intangible assets was determined primarily by using a discounted cash flow method. The Company's allocation for the purchase price for Apex, except for the pre-acquisition contingencies and income taxes related to the acquisition, have been finalized. Any material measurement period adjustments will be recorded retrospectively to the acquisition date.
During 2012, the Company adjusted Valesta's purchase price allocation. The adjustment was to correct the tax impact of the amortization of identifiable intangible assets. The adjustment was not material and had no impact on the consolidated statements of operations and comprehensive income (loss); accordingly it was not presented retrospectively.
The fair value of earn-out obligations was based on the present value of the expected future payments to be made to the sellers of the acquired businesses in accordance with the respective purchase agreements. See Note - 15 Fair Value Measurements for further information regarding the fair value of earn-outs and the level 3 rollforward disclosure.
The following tables summarize (in thousands) the purchase price allocations for the acquisitions of Apex, which is subject to finalization during the measurement period and HCP and Valesta:

| 2012 Acquisition |  | 2011 Acquisitions
| Apex |  | HCP |  | Valesta |  | Total
Current assets | $ | 169,844 |  |  | $ | 3,950 |  |  | $ | 6,332 |  |  | $ | 10,282 |
Property and equipment | 902 |  |  | 123 |  |  | 299 |  |  | 422 |
Goodwill | 266,788 |  |  | 14,398 |  |  | 17,911 |  |  | 32,309 |
Identifiable intangible assets | 251,555 |  |  | 1,784 |  |  | 5,679 |  |  | 7,463 |
Other | 494 |  |  | 13 |  |  | 26 |  |  | 39 |
Total assets acquired | $ | 689,583 |  |  | $ | 20,268 |  |  | $ | 30,247 |  |  | $ | 50,515 |
Current liabilities | $ | 77,905 |  |  | $ | 1,070 |  |  | $ | 4,774 |  |  | $ | 5,844 |
Other | 850 |  |  | 49 |  |  | 1,814 |  |  | 1,863 |
Total liabilities assumed | 78,755 |  |  | 1,119 |  |  | 6,588 |  |  | 7,707 |
Total purchase price | $ | 610,828 |  |  | $ | 19,149 |  |  | $ | 23,659 |  |  | $ | 42,808 |

The following table summarizes (in thousands) the allocation of the purchase price among the identifiable intangible assets for the acquisition of Apex, HCP and Valesta:

|  |  | Identifiable Intangible Asset Value
|  |  | 2012 Acquisition |  | 2011 Acquisitions
| Useful life |  | Apex |  | HCP |  | Valesta |  | Total
Contractor relations | 2 – 5 years |  | $ | 10,589 |  |  | $ | 814 |  |  | $ | 266 |  |  | $ | 1,080 |
Customer relations | 2 – 10 years |  | 92,147 |  |  | 950 |  |  | 2,395 |  |  | 3,345 |
Non-compete agreements | 2 – 7 years |  | 2,076 |  |  | 20 |  |  | 440 |  |  | 460 |
Trademarks | indefinite |  | 146,743 |  |  | — |  |  | 2,578 |  |  | 2,578 |
|  |  | $ | 251,555 |  |  | $ | 1,784 |  |  | $ | 5,679 |  |  | $ | 7,463 |

The summary below (in thousands, except for per share data) presents pro forma unaudited consolidated results of operations for the years ended December 31, 2012 and 2011 as if the acquisitions of HCP and Valesta occurred on January 1, 2010, and the acquisition of Apex occurred on January 1, 2011. The acquisitions in 2010 were not material to the Company, therefore pro forma information related to these acquisitions has not been presented. The pro forma financial information gives effect to certain adjustments, including: the amortization of intangible assets and interest expense on acquisition-related debt, changes in the management fees, and increased number of common shares
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as a result of the acquisition. Acquisition-related costs are assumed to have occurred at the beginning of the year prior to acquisition. The pro forma financial information is not necessarily indicative of the operating results that would have occurred if the acquisition had been consummated as of the date indicated, nor are they necessarily indicative of future operating results.

| 2012 |  | 2011
Revenues | $ | 1,459,762 |  |  | $ | 1,266,523 |
Operating income | $ | 113,738 |  |  | $ | 64,292 |
Income from continuing operations | $ | 51,373 |  |  | $ | 23,574 |
Net income | $ | 55,615 |  |  | $ | 26,109 |
Basic earnings per share: |  |  |
Income from continuing operations | $ | 0.99 |  |  | $ | 0.46 |
Net income | $ | 1.07 |  |  | $ | 0.51 |
Diluted earnings per share: |  |  |
Income from continuing operations | $ | 0.97 |  |  | $ | 0.45 |
Net income | $ | 1.05 |  |  | $ | 0.50 |
Weighted average number of shares outstanding | 52,103 |  |  | 51,180 |
Weighted average number of shares and dilutive shares outstanding | 53,190 |  |  | 52,062 |

5. Discontinued Operations.
On February 12, 2013, the Company completed the sale of the Nurse Travel division for $31.0 million in cash and recognized a gain of $14.4 million, net of tax. Under terms of the purchase agreement, the Company delivered net working capital of $5.7 million. The Nurse Travel division, previously included in the Healthcare segment, has been presented separately as discontinued operations in our Consolidated Statement of Operations for all periods presented. The following is a summary of the Nurse Travel division's operating results for the years ended December 31, 2012, 2011 and 2010 (in thousands):

| 2012 |  | 2011 |  | 2010
Revenues | $ | 62,190 |  |  | $ | 49,642 |  |  | $ | 36,745 |
Income (loss) before income taxes | $ | 7,172 |  |  | $ | 4,316 |  |  | $ | (12,994 | )
Provision for income taxes | $ | 2,930 |  |  | $ | 1,769 |  |  | $ | 987 |
Net income (loss) | $ | 4,242 |  |  | $ | 2,547 |  |  | $ | (13,981 | )

6. Long-Term Debt.
Long-term debt at December 31, 2012 and 2011 consisted of the following (in thousands):

| 2012 |  | 2011
New Senior Secured Debt -- |  |  |
$100 million term A loan facility, due May 2017 | $ | 92,500 |  |  | $ | — |
$365 million term B loan facility, due May 2019 | 334,088 |  |  | — |
$75 million revolving credit facility, due May 2017 | — |  |  | — |
Old Senior Secured Debt (repaid May 2012) -- |  |  |
$75 million revolving credit facility | — |  |  | 43,000 |
$50 million term loan facility | — |  |  | 43,750 |
| $ | 426,588 |  |  | $ | 86,750 |

On May 15, 2012, in connection with the Apex acquisition, the Company entered into a new senior secured credit agreement. The new credit agreement consists of (i) a $100.0 million, five-year term loan A facility, (ii) a $365.0 million, seven-year term loan B facility and (iii) a $75.0 million, five-year revolving loan facility with a $15.0 million sublimit for letters of credit. The new credit agreement also provides the ability to increase the loan facilities for up to $75.0 million in additional principal amount of revolving or term B loans, subject to receipt of lender commitments and satisfaction of specified conditions.
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Borrowings under the new credit agreement bear interest at a variable rate based upon, at the Company’s option, either the Eurodollar rate or the base rate, plus in each case, an applicable margin. The applicable margin for Eurodollar rate loans for the revolving loans and the term A loans ranges, based on the applicable leverage ratio, from 2.75 percent to 3.25 percent per annum and the applicable margin for base rate loans ranges, based on the applicable leverage ratio, from 1.75 percent to 2.25 percent per annum. The applicable margin for Eurodollar rate loans for the term B loans is 3.75 percent per annum and the applicable margin for base rate loans is 2.75 percent per annum. The Company is required to pay a commitment fee equal to 0.50 percent per annum on the undrawn portion available under the revolving loan facility if its leverage ratio is greater than or equal to 3.00 to 1.00, a commitment fee equal to 0.40 percent per annum if its leverage ratio is less than 3.00 to 1.00 but greater than or equal to 2.00 to 1.00 and a commitment fee equal to 0.30 percent per annum if its leverage ratio is less than 2.00 to 1.00. Additionally, the Company is required to pay variable per annum fees equal to the applicable margin for Eurodollar rate loans in respect of outstanding letters of credit. At December 31, 2012, borrowings on the term A loan bore interest at 3.2 percent, and borrowings on the term B loan bore interest at 5.0 percent. The weighted average interest rate at December 31, 2012 was 4.6 percent.
The Company is required to make quarterly amortization payments on the term loan A facility in the amount of $2.5 million. The Company is also required to make mandatory prepayments of loans under the new credit agreement, subject to specified exceptions, from excess cash flows and with the proceeds of asset sales, debt issuances and specified other events.
The Company’s obligations under the new credit agreement are guaranteed by substantially all of its direct and indirect domestic subsidiaries. The obligations under the new credit agreement and the guarantees are secured by a lien on substantially all of the Company’s tangible and intangible property and by a pledge of all of the equity interests in its direct and indirect domestic subsidiaries.
The new credit agreement also places limits on the Company’s and its subsidiaries’ ability to incur liens, incur additional indebtedness, make loans and investments, engage in mergers and acquisitions, engage in asset sales, declare dividends or redeem or repurchase capital stock, alter the business conducted by the Company and its subsidiaries, transact with affiliates, prepay, redeem or purchase subordinated debt and amend or otherwise alter debt agreements. The Company's leverage ratio (consolidated funded debt to trailing 12 months earnings before interest, taxes, depreciation and amortization (EBITDA)) is currently limited to no more than 4.25 to 1.00 and reduces over time to 3.00 to 1.00. As of December 31, 2012, the leverage ratio was approximately 2.73 to 1.00. A failure to comply with these covenants could permit the lenders under the new credit agreement to declare all amounts borrowed under the new credit agreement, together with accrued interest and fees, to be immediately due and payable.
As of December 31, 2012 and 2011, the Company was in compliance with all of its debt covenants. As of December 31, 2012, the Company had $72.2 million of borrowing available under our credit facility.
7. Goodwill and Other Identifiable Intangible Assets.
The changes in the carrying amount of goodwill for the years ended December 31, 2012 and 2011 are as follows (in thousands):

| Apex |  | Oxford |  | Life Sciences |  | Healthcare |  | Physician |  | Total
Balance as of December 31, 2010 |  |  |  |  |  |  |  |  |  |  |
Gross goodwill | $ | — |  |  | $ | 149,483 |  |  | $ | 12,561 |  |  | $ | 122,230 |  |  | $ | 37,163 |  |  | $ | 321,437 |
Accumulated impairment | — |  |  | — |  |  | — |  |  | (121,717 | ) |  | — |  |  | (121,717 | )
| — |  |  | 149,483 |  |  | 12,561 |  |  | 513 |  |  | 37,163 |  |  | 199,720 |
Valesta acquisition (see Note 4) | — |  |  | — |  |  | 16,097 |  |  | — |  |  | — |  |  | 16,097 |
HCP acquisition (see Note 4) | — |  |  | — |  |  | — |  |  | — |  |  | 14,407 |  |  | 14,407 |
Translation adjustment | — |  |  | — |  |  | (990 | ) |  | — |  |  | — |  |  | (990 | )
Balance as of December 31, 2011 |  |  |  |  |  |  |  |  |  |  |
Gross goodwill | — |  |  | 149,483 |  |  | 27,668 |  |  | 122,230 |  |  | 51,570 |  |  | 350,951 |
Accumulated impairment | — |  |  | — |  |  | — |  |  | (121,717 | ) |  | — |  |  | (121,717 | )
| — |  |  | 149,483 |  |  | 27,668 |  |  | 513 |  |  | 51,570 |  |  | 229,234 |
Apex acquisition (see Note 4) | 266,788 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 266,788 |
Acquisition accounting | — |  |  | — |  |  | 1,814 |  |  | — |  |  | (9 | ) |  | 1,805 |
Translation adjustment | — |  |  | — |  |  | 529 |  |  | — |  |  | — |  |  | 529 |
Balance as of December 31, 2012 |  |  |  |  |  |  |  |  |  |  |
Gross goodwill | 266,788 |  |  | 149,483 |  |  | 30,011 |  |  | 122,230 |  |  | 51,561 |  |  | 620,073 |
Accumulated impairment | — |  |  | — |  |  | — |  |  | (121,717 | ) |  | — |  |  | (121,717 | )
| $ | 266,788 |  |  | $ | 149,483 |  |  | $ | 30,011 |  |  | $ | 513 |  |  | $ | 51,561 |  |  | $ | 498,356 |

Subsequent to the issuance of the Company's annual report on Form 10-K for the year ended December 31, 2011, the Company identified an error of $1.8 million to record deferred tax liabilities and a corresponding increase in goodwill related to Valesta's intangible assets. The Company considers this an immaterial adjustment and has corrected the goodwill and deferred tax liabilities as of December 31,
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2012 reflecting the adjustment in the accompanying consolidated balance sheets, the adjustments in the non-cash supplemental disclosures in the consolidated statements of cash flows and related footnote disclosures. This adjustment has no effect on the Company's consolidated statements of operations and comprehensive income (loss).
As of December 31, 2012 and December 31, 2011, the Company had the following acquired intangible assets (in thousands):

|  |  |  | 2012 |  | 2011
|  | Estimated Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relations |  | 3 months – 10 years |  | $ | 103,285 |  |  | $ | 23,338 |  |  | $ | 79,947 |  |  | $ | 11,077 |  |  | $ | 7,891 |  |  | $ | 3,186 |
Contractor relations |  | 2 - 7 years |  | 37,871 |  |  | 27,754 |  |  | 10,117 |  |  | 27,276 |  |  | 25,599 |  |  | 1,677 |
Non-compete agreements |  | 2 - 7 years |  | 2,986 |  |  | 1,062 |  |  | 1,924 |  |  | 899 |  |  | 604 |  |  | 295 |
|  |  |  | 144,142 |  |  | 52,154 |  |  | 91,988 |  |  | 39,252 |  |  | 34,094 |  |  | 5,158 |
Not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trademarks |  |  |  | 171,852 |  |  | — |  |  | 171,852 |  |  | 25,048 |  |  | — |  |  | 25,048 |
Goodwill |  |  |  | 498,356 |  |  | — |  |  | 498,356 |  |  | 229,234 |  |  | — |  |  | 229,234 |
Total |  |  |  | $ | 814,350 |  |  | $ | 52,154 |  |  | $ | 762,196 |  |  | $ | 293,534 |  |  | $ | 34,094 |  |  | $ | 259,440 |

Amortization expense for intangible assets with finite lives was $18.0 million in 2012, $2.3 million in 2011 and $2.1 million in 2010. Estimated amortization for the each of the next five fiscal years and thereafter follows (in thousands):

2013 | $ | 20,973 |
2014 | 16,823 |
2015 | 14,305 |
2016 | 12,369 |
2017 | 8,996 |
Thereafter | 18,522 |
| $ | 91,988 |

Goodwill and other intangible assets having an indefinite useful life are not amortized for financial statement purposes. Goodwill and intangible assets with indefinite lives are reviewed for impairment on an annual basis as of October 31 and whenever certain events or changes in circumstances occur. No impairment charge was recorded for any of the reporting units as of October 31, 2012. Based upon the annual goodwill impairment test in 2011, there was no goodwill impairment charge. The Company recognized a goodwill impairment charge of $15.4 million in the fourth quarter of 2010. Goodwill for the Company's impaired reporting unit, Nurse Travel, with a carrying amount of $15.4 million was written down to the implied fair value of $0 resulting in an impairment charge of $15.4 million, which is included in income (loss) from discontinued operations, net of income taxes.
8. 401(k) Retirement Savings Plan, Deferred Compensation Plan and Change in Control Severance Plan.
Under the Company’s 401(k) Retirement Savings Plan, which covers eligible employees of On Assignment and its wholly-owned subsidiaries, Assignment Ready Inc., On Assignment Staffing Services, Inc., VISTA, and Oxford, eligible employees may elect to have a portion of their salary deferred and contributed to the plans. The amount of salary deferred, up to certain limits set by the IRS, is not subject to federal and state income tax at the time of deferral, but together with any earnings on deferred amounts, is subject to taxation upon distribution. The plan covers all eligible employees and permits matching or other discretionary contributions at the Company’s discretion. Eligible employees may enroll once they complete three months of service prior to the next quarterly offering. Apex sponsors a 401(k) plan for the benefit of all eligible Apex employees. Employees are eligible to participate after 12 months of service, 1000 hours of work, and attaining the age of 18. Under the terms of the plan, employees are entitled to contribute a portion of their total compensation, within limitations established by the Internal Revenue Code. The Company pledged to make contributions to the 401(k) plans of $3.7 million in 2012 and made contributions of $1.1 million and $0.4 million in 2011 and 2010, respectively.
Effective January 1, 1998, the Company implemented the On Assignment, Inc. Deferred Compensation Plan. On September 4, 2008, effective as of January 1, 2008, the Company amended the On Assignment Deferred Compensation Plan and adopted a new plan, called the On Assignment Deferred Compensation Plan – Effective January 1, 2008, applicable to deferrals made on or after January 1, 2005 (referred to herein as the 2008 Deferred Compensation Plan). On April 20, 2011, the Company’s Board of Directors authorized and directed the
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termination of the 1998 Deferred Compensation Plan and the 2008 Deferred Compensation Plan (collectively referred to as the Plans), effective May 2, 2011.
The deferred compensation liability under the deferred compensation plans was approximately $1.9 million at December 31, 2011. Life insurance policies were maintained as a funding source to the plans, under which the Company is the sole owner and beneficiary of such insurance. At December 31, 2011, the cash surrender value of these life insurance policies was $2.1 million, reflected in other current assets in the accompanying Consolidated Balance Sheets. As a result of the termination, the Company received $1.5 million related to the cash surrender value of the life insurance proceeds, which were maintained as a funding source to the deferred compensation plans, and in June 2012, distributed $1.2 million to plan participants according to the terms of the Plans.
As a result of the merger with Apex, the Company assumed a long-term incentive program, which began in 2010, that provides for a total award of up to $10.0 million to eligible employees, based on the attainment by Apex of stipulated revenues and EBITDA goals during a three year performance period. The Company determined that it was probable that the revenue and EBITDA goals for Apex would be reached in 2012 and the Company accrued approximately $7.9 million at May 15, 2012 (the effective date of the acquisition), and $10.0 million at December 31, 2012, which are included in deferred compensation in the Consolidated Balance Sheet.
The Company adopted the On Assignment, Inc. Change in Control Severance Plan (the CIC Plan) to provide severance benefits for officers and certain other employees who are terminated following an acquisition of the Company. This CIC Plan was adopted as of February 12, 2004 and amended and restated on December 11, 2008. Under the CIC Plan, eligible employees with titles of vice president or higher who are involuntarily terminated within eighteen months after a change in control, as defined in the CIC Plan will be entitled to (i) a payment equal to the employee's annual salary plus the employee's target bonus, payable in a lump sum, and (ii) a lump sum payment representing the cost of continuation of health and welfare benefits, under the Consolidated Omnibus Budget Reconciliation Act of 1985 (COBRA). Severance pay under the CIC Plan varies depending on the eligible employee's length of service and position with the Company.
The Company entered into an Amended and Restated Executive Change of Control Agreement with the Chief Executive Officer on December 11, 2008, primarily for the purpose of causing his previous agreement to meet the requirements of Code Section 409A. This agreement supersedes the CIC Plan and provides, in the event of an involuntary termination occurring within six months and ten days following a change of control of the Company, that the Chief Executive Officer is entitled to the benefits including salary and bonus payments, continuation of health and welfare benefits and car allowance, cash payments equal to insurance premiums and retirement and deferred compensation contributions, and payment for outplacement services. Additionally, under the arrangements, immediately prior to a change of control, all outstanding Company stock options, restricted stock and stock units held by the Chief Executive Officer will become fully vested (and, in the case of options, remain exercisable for an extended period), subject to any express limitations contained in the Chief Executive Officer's employment agreement. In addition, the agreement entitles the Chief Executive Officer to tax gross-up payments in the event that any payments are subject to “golden parachute” excise taxes under IRS Code Section 280G.
The Company entered into an Executive Change of Control Agreement with the Chief Financial Officer on September 1, 2012. This agreement supersedes the CIC Plan and provides, in the event of an involuntary termination occurring within six months and ten days following a change of control of the Company, for benefits including salary and bonus payments, car allowance, healthcare coverage, cash payment equal to premiums for life insurance and disability insurance, and payment for outplacement services. Immediately prior to a change of control, all outstanding Company stock options, restricted stock and stock units held by the officer will become fully vested (and, in the case of options, remain exercisable for an extended period). The agreement provides that the Chief Financial Officer with a best pay cap reduction for any excess parachute payments under Code Section 280G unless he would receive a greater after-tax benefit without the reduction and after paying the related excise tax.
9. Commitments and Contingencies.
The Company leases its facilities and certain office equipment under operating leases, which expire at various dates through 2022. Certain leases contain rent escalations and/or renewal options. Rent expense for all significant leases is recognized on a straight-line basis. The balance of the deferred rent liability reflected in other current liabilities in the accompanying Consolidated Balance Sheets was $0.3 million at December 31, 2012 and 2011 and the balance reflected in other long-term liabilities was $3.8 million and $2.1 million, at December 31, 2012 and 2011 respectively.
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The following is a summary of specified contractual cash obligation payments by the Company, including discontinued operations, as of December 31, 2012 (in thousands):

|  | Long-Term Debt |  | Operating Leases |  | Related Party Leases |  | Total
2013 |  | $ | 10,000 |  |  | $ | 13,545 |  |  | $ | 1,266 |  |  | $ | 24,811 |
2014 |  | 10,000 |  |  | 11,117 |  |  | 1,299 |  |  | 22,416 |
2015 |  | 10,000 |  |  | 9,210 |  |  | 1,168 |  |  | 20,378 |
2016 |  | 10,000 |  |  | 6,386 |  |  | 694 |  |  | 17,080 |
2017 |  | 52,500 |  |  | 3,588 |  |  | 175 |  |  | 56,263 |
Thereafter |  | 334,088 |  |  | 6,764 |  |  | — |  |  | 340,852 |
Total |  | $ | 426,588 |  |  | $ | 50,610 |  |  | $ | 4,602 |  |  | $ | 481,800 |

Rent expense, which totaled $13.7 million for 2012, $8.2 million for 2011, and $8.0 million for 2010, is included in SG&A expenses.
As discussed in Note 1, the Company carries large retention policies for its workers’ compensation liability and its medical malpractice exposures. The workers' compensation and medical malpractice loss reserves are based upon an actuarial report obtained from a third party and determined based on claims filed and claims incurred but not reported. The Company accounts for claims incurred but not yet reported based on estimates derived from historical claims experience and current trends of industry data. Changes in estimates, differences in estimates and actual payments for claims are recognized in the period that the estimates changed or the payments were made. The workers' compensation and medical malpractice loss reserves were approximately $10.3 million and $10.4 million at December 31, 2012 and 2011, respectively. Additionally, the Company has unused stand-by letters of credit outstanding to secure obligations for workers’ compensation claims with various insurance carriers. The unused stand-by letters of credit at December 31, 2012 and December 31, 2011 were $2.8 million and $2.4 million, respectively.
The Company is subject to earn-out obligations entered into in connection with certain of its acquisitions. If the acquired businesses meet predetermined financial targets, the Company is obligated to make additional cash payments in accordance with the terms of such earn-out obligations. As of December 31, 2012, the Company has potential future earn-out obligations of approximately $9.1 million through 2013.
The Company has entered into various non-cancelable operating leases, primarily related to its facilities and certain office equipment used in the ordinary course of business. As a result of the Apex acquisition, the Company leases two properties owned by related parties.
At December 31, 2012 and 2011, the Company has an income tax reserve in other long-term liabilities related to uncertain tax positions of $0.4 million and $0.3 million, respectively.
Legal Proceedings
The Company is involved in various legal proceedings, claims and litigation arising in the ordinary course of business. However, based on the facts currently available, the Company does not believe that the disposition of matters that are pending or asserted will have a material effect on its consolidated financial statements.
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10. Income Taxes.
The provision (benefit) for income taxes consists of the following (in thousands):

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Current: |  |  |  |  |  |
Federal |  | $ | 18,201 |  |  | $ | 8,231 |  |  | $ | 862 |
State |  | 2,921 |  |  | 1,274 |  |  | 432 |
Foreign |  | 2,645 |  |  | 1,465 |  |  | 412 |
|  | 23,767 |  |  | 10,970 |  |  | 1,706 |
Deferred: |  |  |  |  |  |  |  |
Federal |  | 5,617 |  |  | 3,818 |  |  | 2,260 |
State |  | 565 |  |  | 416 |  |  | — |
Foreign |  | (822 | ) |  | (261 | ) |  | (212 | )
|  | 5,360 |  |  | 3,973 |  |  | 2,048 |
Change in valuation allowance |  | 246 |  |  | 454 |  |  | 215 |
|  | $ | 29,373 |  |  | $ | 15,397 |  |  | $ | 3,969 |

Income (loss) before income taxes consists of the following (in thousands):

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
United States |  | $ | 65,012 |  |  | $ | 33,089 |  |  | $ | 6,923 |
Foreign |  | 2,772 |  |  | 4,058 |  |  | 1,130 |
|  | $ | 67,784 |  |  | $ | 37,147 |  |  | $ | 8,053 |

The components of deferred tax assets (liabilities) are as follows (in thousands):

|  | December 31, 2012 |  | December 31, 2011
Deferred income tax assets (liabilities): |  |  |  |
Current: |  |  |  |
Allowance for doubtful accounts |  | $ | 1,150 |  |  | $ | 1,007 |
Employee related accruals |  | 3,419 |  |  | 2,923 |
State taxes |  | 1,064 |  |  | 534 |
Workers’ compensation and medical malpractice loss reserves |  | 4,683 |  |  | 4,277 |
Prepaid insurance |  | (631 | ) |  | (319 | )
Other |  | 462 |  |  | 849 |
|  | 10,147 |  |  | 9,271 |
Non-current: |  |  |  |  |
Intangibles |  | (23,662 | ) |  | (15,559 | )
Depreciation expense |  | (4,449 | ) |  | (3,867 | )
Stock-based compensation |  | 2,852 |  |  | 3,428 |
Net operating loss carryforwards |  | 1,191 |  |  | 1,054 |
Other |  | 1,975 |  |  | 758 |
|  | (22,093 | ) |  | (14,186 | )
Valuation allowance |  | (916 | ) |  | (670 | )
Total net deferred income tax liability |  | $ | (12,862 | ) |  | $ | (5,585 | )

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The reconciliation between the amount computed by applying the U.S. federal statutory tax rate of 35.0 percent for 2012, 35.0 percent for 2011, and 34.0 percent for 2010 to income before income taxes and the income tax provision is as follows (in thousands):

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Income tax provision at the statutory rate |  | $ | 23,727 |  |  | $ | 13,002 |  |  | $ | 2,740 |
State income taxes, net of federal benefit |  | 2,671 |  |  | 1,341 |  |  | 358 |
Permanent difference – disallowed meals and entertainment expenses |  | 1,681 |  |  | 1,020 |  |  | 545 |
Permanent difference – settlement of earn-out |  | — |  |  | (445 | ) |  | — |
Valuation allowance related to foreign jurisdictions |  | 246 |  |  | 454 |  |  | 215 |
Income tax contingency |  | 276 |  |  | (91 | ) |  | (16 | )
Foreign tax rate differential |  | 14 |  |  | (222 | ) |  | (181 | )
Other |  | 758 |  |  | 338 |  |  | 308 |
|  | $ | 29,373 |  |  | $ | 15,397 |  |  | $ | 3,969 |

As of December 31, 2012, the Company had no federal net operating losses, state net operating losses of approximately $9.5 million and foreign net operating losses of approximately $3.1 million. The state net operating losses can be carried forward up to 20 years and begin expiring in 2013. The foreign net operating losses in the United Kingdom can be carried forward indefinitely and the net operating losses in Spain can be carried forward up to 18 years beginning from the first period of profits. The Company has recorded a valuation allowance of approximately $0.9 million and $0.7 million at December 31, 2012 and December 31, 2011, respectively, related to net operating loss carryforwards.
At December 31, 2012, the Company had accumulated net foreign earnings of $13.0 million. The Company did not provide deferred taxes on the excess of the financial reporting over the tax basis in its investment in foreign subsidiaries since the Company intends to permanently reinvest the undistributed earnings of its foreign subsidiaries. The determination of additional deferred taxes that have not been provided is not practicable.
The Company had gross deferred tax assets of $17.7 million and $14.4 million and gross deferred tax liabilities of $30.5 million and $19.9 million at December 31, 2012 and 2011, respectively.
The Company receives a tax deduction for stock-based awards upon exercise of a non-qualified stock options or as the result of disqualifying dispositions made by directors, officers and employees. A disqualifying disposition occurs when stock acquired through the exercise of incentive stock options or the Employee Stock Purchase Plan is disposed of prior to the required holding period. The Company also receives a tax deduction upon the vesting of restricted stock units or restricted stock awards. The Company received tax deductions of $22.8 million and $7.5 million, respectively, from stock-based awards in 2012 and 2011.
As of December 31, 2012, the Company had $0.4 million of gross unrecognized tax benefits, which includes penalties and interest, all of which was carried in other long-term liabilities. If the Company’s positions are sustained by the taxing authority in favor of the Company, the entire $0.4 million would reduce the Company’s effective tax rate. The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. The amount of interest and penalties recognized in the financial statements is not significant.
The following is a reconciliation of the total amounts of unrecognized tax benefits (in thousands):

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Unrecognized Tax Benefit beginning of year |  | $ | 251 |  |  | $ | 358 |  |  | $ | 397 |
Gross decreases - tax positions in prior year |  | (34 | ) |  | — |  |  | (39 | )
Reductions for tax positions as a result of a lapse of the applicable statute of limitations |  | — |  |  | (107 | ) |  | — |
Gross increases - tax positions in prior year |  | 159 |  |  | — |  |  | — |
Unrecognized Tax Benefit end of year |  | $ | 376 |  |  | $ | 251 |  |  | $ | 358 |

The Company believes that there will be no significant increases or decreases to unrecognized tax benefits within the next twelve months.
The Company is subject to taxation in the United States and various states and foreign jurisdictions. The IRS has examined and concluded all tax matters for years through 2009.
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11. Earnings per Share.
Basic earnings per share are computed based upon the weighted average number of shares outstanding and diluted earnings per share are computed based upon the weighted average number of shares and dilutive share equivalents (consisting of incentive stock options, non-qualified stock options, restricted stock units, restricted stock awards and employee stock purchase plan contributions) outstanding during the periods using the treasury stock method.
The following is a reconciliation of the shares used to compute basic and diluted earnings per share (in thousands):

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Weighted average number of common shares |  | 46,739 |  |  | 36,876 |  |  | 36,429 |
Dilutive effect of stock-based awards |  | 1,087 |  |  | 882 |  |  | 621 |
Number of shares used to compute diluted earnings per share |  | 47,826 |  |  | 37,758 |  |  | 37,050 |

The following table presents the weighted average share equivalents outstanding during each period that were excluded from the computation of diluted earnings per share because the exercise price for these options was greater than the average market price of the Company’s shares of common stock during the respective periods. Also excluded from the computation of diluted earnings per share were other share equivalents that became anti-dilutive when applying the treasury stock method.

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Anti-dilutive common share equivalents outstanding |  | 83 |  |  | 1,039 |  |  | 1,339 |

12. Stock-based Compensation: Incentive Award Plan and Employee Stock Purchase Plan.
The Company believes that stock-based compensation better aligns the interests of its employees and directors with those of its shareholders versus exclusively providing cash-based compensation. Stock-based compensation provides incentives to retain and motivate executive officers and key employees responsible for driving Company performance and maintaining important relationships that contribute to the growth of the Company.
Compensation expense charged to operations related to stock-based compensation, which totaled $9.6 million, $6.9 million, and $7.7 million for each of the years ended December 31, 2012, 2011 and 2010, respectively, is included in the Consolidated Statements of Operations and Comprehensive Income (Loss) in SG&A expenses. The Company has recognized an income tax benefit of $3.5 million, $2.5 million, and $2.9 million for the years ended December 31, 2012, 2011 and 2010, respectively in the consolidated statements of operations for stock-based compensation arrangements.
Effective June 3, 2010, shareholders of the Company approved the adoption of the On Assignment, Inc. 2010 Incentive Award Plan (the 2010 Plan), which replaced the Company’s Restated 1987 Stock Option Plan (the 1987 Plan). The 2010 Plan permits the grant of stock options, including incentive stock options, nonqualified stock options, restricted stock awards (RSAs), dividend equivalent rights, stock payments, deferred stock, restricted stock units (RSUs), performance shares and other incentive awards, stock appreciation rights and cash awards to its employees, directors and consultants for up to 2,184,983 shares of common stock, which included 884,983 shares that remained available for issuance under the 1987 Plan as of June 3, 2010. The 2010 Plan allows for stock option awards to be granted with an exercise price equal to the closing market price of the Company’s stock at the date of grant. Stock option awards generally vest over four years of continuous service with the Company and generally have ten-year contractual terms. RSUs and RSAs generally vest over a three year continuous service period, though individual award vesting terms vary within these parameters. Certain stock option awards and RSUs and RSAs provide for accelerated vesting in the event of a change in control (see Note 8). Options or awards that are canceled or forfeited are added back to the pool of shares available for issuance under the 2010 Plan. As of December 31, 2012, there were 1,502,481 shares available for issuance under the 2010 Plan.
The fair value of each option award is estimated on the date of grant using a Black-Scholes option valuation model that incorporates assumptions disclosed in the table below. Expected volatility is based on historical volatility of the underlying stock for a period consistent with the expected lives of the stock options as the Company believes this is a reasonable representation of future volatility. Additionally, the Company analyzes historical stock option exercise behavior and vesting patterns for RSUs and RSAs in order to estimate employee turnover rates (i.e. forfeiture rates). The forfeiture rate, set by management, is used to estimate the number of options and awards that will eventually vest and the associated impact on stock-based compensation expense. The expected life, or term, of options granted is derived from historical exercise behavior and represents the period of time that stock option awards are expected to be outstanding. The Company has selected a risk-free rate based on the implied yield available on U.S. Treasury Securities with a maturity equivalent to the options’ expected term. For RSUs and RSAs, the Company records compensation expense based on the fair market value of the awards on the grant date.
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The preceding paragraphs describe the general terms of most stock-based incentive awards granted by the Company. However, the Company has granted a discrete set of stock-based awards to its Chief Executive Officer (CEO) and other corporate officers that differ from those generally stated terms. The grant-date fair-value of these awards, which was determined by applying certain provisions of the stock compensation guidance relative to performance-based and market-based awards, is generally being expensed over the vesting term. The impact of these awards is reflected in the detailed RSU and RSA disclosures below. All awards are subject to the officer’s continued employment through such vesting dates, however, the vesting of certain awards will accelerate upon the occurrence of a change in control of the Company and/or upon certain qualifying terminations of employment.
2012 Employment Inducement Incentive Award Plan
Effective May 15, 2012 (amended and restated as of December 13, 2012), the Board of Directors adopted the 2012 Employment Inducement Incentive Award Plan (2012 Inducement Award Plan). The 2012 Inducement Award Plan includes terms similar to the 2010 Plan and allows for grants of stock to employees as employment inducement awards pursuant to NYSE rules.
CEO Awards
The Company granted discrete stock-based awards to its CEO as follows: (i) a market based award in 2010 with a grant date fair market value of $0.5 million. The award was expensed over a service perio d of 2.6 years and the number of shares were determined by dividing $0.5 million by the closing price of the Company stock on February 1, 2013, contingent upon the achievement of defined market targets, which were met, (ii) a performance based award on March 8, 2011, which had a grant date fair market value of $1.0 million and was expensed over a service period of 9.9 months, the financial performance objectives were met by the Company during the twelve month period ending December 31, 2011 and 24,654 shares vested on December 31, 2012 and the remaining number of shares will be determined by dividing $0.5 million by the closing price of the Company’s stock on February 1, 2014, and (iii) a performance based award on March 23, 2012, which had a grant date fair market value of $1.5 million and was expensed over a service period of 9.3 months, the financial performance objectives were met by the Company during the twelve month period ending December 31, 2012 and 24,654 shares vested on December 31, 2012 and the remaining number of shares will be determined by dividing $0.5 million by the closing price of the Company’s stock on each of February 1, 2014 and February 1, 2015. The Company classifies these awards as liability awards until the number of shares is determined. The liability of $2.0 million related to these awards is included in other accrued expenses and other long-term liabilities in the accompanying Consolidated Balance Sheets as of December 31, 2012.
On December 31, 2012, the CEO was awarded 39,448 RSUs with a grant date fair market value of $0.8 million, contingent upon the Company meeting certain financial performance objectives based on adjusted EBITDA approved by the Compensation Committee over the twelve-month period ending December 31, 2013 and continued employment through January 1, 2014.
On March 5, 2012, the CEO was awarded 45,372 RSUs with a grant date fair market value of $0.6 million, of which 22,686 shares vested on December 31, 2012 and the remaining 22,686 shares will vest on January 4, 2014. As of December 31, 2012, the performance targets had been fully achieved and certified by the Compensation Committee of the Board of Directors.
On March 8, 2011, the CEO was awarded 58,754 RSUs with a grant date fair market value of $0.6 million, which vested in two equal components of $0.3 million on January 1, 2012 and December 31, 2012. As of December 31, 2011, the performance targets had been fully achieved and certified by the Compensation Committee.
On March 17, 2010, the CEO was granted 67,568 RSUs, with a grant-date fair value of $0.5 million, of which 33,784 RSUs vested on February 1, 2011 and 33,784 RSUs vested on February 1, 2012. As of December 31, 2011, the performance targets had been fully achieved and certified by the Compensation Committee and the grant-date fair value was expensed over the respective vesting periods for each of the two components.
On November 4, 2009, the Company entered into an employment agreement with the CEO that provided for three annual stock award grants with grant-date values of $0.8 million each, based on performance objectives for 2010 through 2012 that vested on February 1, 2011, January 1, 2012, and December 31, 2012, respectively, contingent upon achieving positive adjusted EBITDA, which were met for each of the respective periods.
The grant-date fair value of the RSUs are expensed over the vesting term, based on an estimate of the percentage achievement of the applicable performance targets. All awards were subject to the CEO’s continued employment through applicable vesting dates. All awards may vest on an accelerated basis in part or in full upon the occurrence of certain events.
Other Executive Officer Awards
The Company records stock-based compensation expense over the vesting period of the awards based on the probability that the performance objectives will be met and that the executives will maintain their employment through the respective vesting dates.
In the first quarter of 2012, the Company granted RSUs to certain executive officers with an aggregate grant-date fair value of $1.7 million. Of the $1.7 million, $0.9 million will vest in three equal annual increments subject to continued employment on each succeeding
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grant-date anniversary. The remaining $0.8 million vested on December 31, 2012, as certain performance objectives approved by the Compensation Committee were attained and certified by the Compensation Committee.
On May 15, 2012, the Company granted RSUs to certain executive officers in conjunction with the acquisition of Apex. The aggregate grant-date fair value of these grants was $0.8 million. Of the $0.8 million, $0.6 million will vest in three equal annual increments subject to continued employment on each succeeding grant-date anniversary. The remaining $0.2 million will vest on May 31, 2013, subject to continued employment, Apex attaining certain performance objectives and certification by the Compensation Committee.
In the first quarter of 2011, the Company granted RSUs to certain executive officers with an aggregate grant-date fair value of $1.6 million Of the $1.6 million, $0.9 million will vest in three annual increments subject to continued employment on each succeeding grant-date anniversary. The remaining $0.7 million vested on January 3, 2012, as certain performance objectives approved by the Compensation Committee were attained and certified by the Compensation Committee.
In the first quarter of 2010, the Company granted RSUs to certain executive officers with an aggregate grant-date fair value of $1.2 million. Sixty percent of the total RSU awards will vest in three annual increments subject to continued employment on each succeeding grant-date anniversary. Forty percent of the awards will vest in three consecutive annual installments contingent upon the officer attaining certain performance objectives certified by the Compensation Committee. Accordingly, the Company records stock-based compensation expense over the vesting period of these awards based on the probability that the performance objectives will be met and that the executives will maintain their employment through the respective vesting dates.
Stock Options
The following table displays the weighted average assumptions that have been applied to estimate the fair value of stock option awards on the date of grant:

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Dividend yield |  | — |  |  | — |  |  | — |
Risk-free interest rate |  | 1.19 | % |  | 0.92 | % |  | 1.47 | %
Expected volatility |  | 64.15 | % |  | 75.67 | % |  | 73.26 | %
Expected lives |  | 7.3 years |  |  | 3.6 years |  |  | 3.6 years |

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The following summarizes pricing and term information for options outstanding as of December 31, 2012:

|  | Options Outstanding |  |  | Options Exercisable |
|  |  |  |  |  | Number Outstanding at |  | Weighted Average Remaining Contractual Life (years) |  | Weighted Average Exercise Price |  | Number Exercisable at |  | Weighted Average Exercise Price
Range of Exercise Prices |  | December 31, 2012 |  |  |  | December 31, 2012 |
$ | 2.82 |  |  | ─ |  | $ | 6.68 |  |  | 275,164 |  |  | 3.4 |  |  | $ | 5.33 |  |  |  | 270,436 |  |  |  | $ | 5.33 |  |
6.86 |  |  | ─ |  | 10.20 |  |  | 280,731 |  |  | 7.5 |  |  | 8.03 |  |  |  | 130,360 |  |  |  | 7.86 |  |
10.46 |  |  | ─ |  | 11.39 |  |  | 308,390 |  |  | 6.5 |  |  | 10.88 |  |  |  | 182,132 |  |  |  | 11.18 |  |
11.56 |  |  | ─ |  | 12.90 |  |  | 275,950 |  |  | 4.1 |  |  | 12.25 |  |  |  | 275,950 |  |  |  | 12.25 |  |
12.91 |  |  | ─ |  | 16.51 |  |  | 146,125 |  |  | 7.0 |  |  | 14.98 |  |  |  | 67,625 |  |  |  | 13.30 |  |
$ | 2.82 |  |  | ─ |  | $ | 16.51 |  |  | 1,286,360 |  |  | 5.6 |  |  | $ | 9.83 |  |  |  | 926,503 |  |  |  | $ | 9.48 |  |

The following table is a summary of stock option activity under the Plan as of December 31, 2012 and changes for the year then ended:

|  | Incentive Stock Options |  | Non- Qualified Stock Options |  | Weighted Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value
Outstanding at January 1, 2012 |  | 221,466 |  |  | 2,041,738 |  | $ | 8.62 |  |  |  | 5.3 |  |  | $ | 6,928,000 |
Granted |  | — |  |  | 78,500 |  | $ | 16.43 |  |  |  |  |  |  |  |
Exercised |  | (87,973) |  |  | (880,233) |  | $ | 7.27 |  |  |  |  |  |  |  |
Canceled |  | (4,070) |  |  | (83,068) |  | $ | 12.78 |  |  |  |  |  |  |  |
Outstanding at December 31, 2012 |  | 129,423 |  |  | 1,156,937 |  | $ | 9.83 |  |  |  | 5.6 |  |  | $ | 13,442,000 |
Vested and Expected to Vest at December 31, 2012 |  | 129,324 |  |  | 1,091,043 |  | $ | 9.70 |  |  |  | 5.4 |  |  | $ | 12,910,000 |
Exercisable at December 31, 2012 |  | 129,192 |  |  | 797,311 |  | $ | 9.48 |  |  |  | 4.5 |  |  | $ | 10,007,000 |

The table above includes 54,000 non-employee director stock options outstanding as of January 1, 2012. There were no non-employee director stock options outstanding as of December 31, 2012.
The weighted-average grant-date fair value of options granted during the years ended December 31, 2012, 2011 and 2010 was $10.34, $5.04, and $3.80 per option, respectively. The total intrinsic value of options exercised during the years ended December 31, 2012, 2011 and 2010 was $9.7 million, $1.3 million, and $0.2 million.
As of December 31, 2012 there was unrecognized compensation expense of $1.5 million related to unvested stock options based on options that are expected to vest. The unrecognized compensation expense is expected to be recognized over a weighted-average period of 2.65 years.
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Restricted Stock Units and Restricted Stock Awards
A summary of the status of the Company’s unvested RSUs and RSAs as of December 31, 2012 and changes during the year then ended are presented below:

|  | Restricted Stock Units / Awards |  | Weighted Average Grant-Date Fair Value Per Unit / Award
Unvested RSUs and RSAs outstanding at January 1, 2012 |  | 1,208,166 |  |  |  | $ | 8.99 |  |
Granted |  | 1,168,172 |  |  |  | 16.94 |  |
Market value share count adjustment for liability awards |  | (84,858 | ) |  |  | 20.28 |  |
Vested |  | (865,833 | ) |  |  | 10.04 |  |
Forfeited |  | (34,813 | ) |  |  | 9.67 |  |
Unvested RSUs and RSAs outstanding at December 31, 2012 |  | 1,390,834 |  |  |  | $ | 14.31 |  |
Unvested and expected to vest RSUs and RSAs outstanding at December 31, 2012 |  | 1,149,735 |  |  |  | $ | 14.50 |  |

The number of shares vested in the table above includes 345,181 shares surrendered by the employees to the Company for payment of minimum tax withholding obligations. Shares of stock withheld for purposes of satisfying minimum tax withholding obligations are again available for issuance under the Plan.
The table above includes 760,788 RSUs with an aggregate grant-date fair value of $12.3 million granted on May 15, 2012 to certain Apex employees. The grants generally vest 25 percent on the first anniversary of the grant date and in 12 quarterly installments thereafter, subject to continued employment.
Additionally, the table above includes 42,392 RSUs that were awarded to non-employee directors on September 1, 2012, of which 21,196 shares vested immediately upon issuance and the remaining shares will vest on September 1, 2013. The weighted average grant-date fair value of these awards was $16.51. There was unrecognized compensation expense of $210,000 as of December 31, 2012 related to these RSUs that will be recorded over the remaining term of eight months.
In December 2012, the Company converted certain RSUs for six executive officers to RSAs and accelerated the vesting of those awards. The original vesting dates for these awards were in January 2013. The awards were accelerated in order to provide an opportunity to accelerate the application of taxes applicable to all or a portion of the equity awards and thereby provide each executive with the certainty of known 2012 tax consequences. There was no incremental compensation cost as a result of this acceleration.
The weighted-average grant-date fair value of RSUs and RSAs granted during the years ended December 31, 2012, 2011 and 2010 was $16.01, $9.18 and $7.26 per award, respectively. The total intrinsic value of RSUs and RSAs vested during the years ended December 31, 2012, 2011 and 2010 was $13.7 million, $6.4 million and $3.7 million, respectively.
As of December 31, 2012, there was unrecognized compensation expense of $12.8 million related to unvested RSUs and RSAs based on awards that are expected to vest. The unrecognized compensation expense is expected to be recognized over a weighted-average period of 2.6 years.
Employee Stock Purchase Plan
Effective June 3, 2010, the date of shareholder approval of the On Assignment 2010 Employee Stock Purchase Plan (the ESPP), the Company reinstated the employee stock purchase program for issuance of up to 3,500,000 shares of common stock with the first offering periods. The ESPP allows eligible employees to purchase common stock of the Company, through payroll deductions, at 85 percent of the lower of the market price on the first day or the last day of semi-annual purchase periods. The ESPP is intended to qualify as an “employee stock purchase plan” under IRS Code Section 423. Eligible employees may contribute up to a certain percentage set by the plan administrator of their eligible earnings toward the purchase of the stock (subject to certain IRS limitations).
In accordance with the ESPP, shares of common stock are transferred to participating employees at the conclusion of each six month enrollment period, which now end on the last business day of the month in March and September each year. The Company issued 154,934 and 187,036 shares of common stock in 2012 and 2011, respectively, under the ESPP. In 2010, no shares were issued under the ESPP.
Compensation expense of shares purchased under the ESPP is measured based on a Black-Scholes option-pricing model. The model accounts for the discount from market value and applies an expected life in line with each six month purchase period. The weighted average fair value of stock purchased under the ESPP was $3.53 and $2.10 for the years ended December 31, 2012 and 2011, respectively. The stock-based compensation expense related to the ESPP was $0.8 million in 2012, $0.4 million in 2011 and $0.1 million in 2010.
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13. Business Segments.
The Company has five reportable segments: Apex, Oxford (formerly IT and Engineering), Life Sciences, Healthcare and Physician.
The Apex segment provides mission-critical IT operations professionals for contract, contract-to-hire and permanent placement positions to Fortune 1000 and mid-market clients across the United States, and offers consulting services for other select project-based needs. Apex provides staffing and services support for companies from all major industries, including financial services, business services, consumer and industrials, technology, healthcare, government services, and communications.
The Oxford segment provides high-end contract and direct placement services of information technology and engineering professionals with expertise in specialized information technology; software and hardware engineering; and mechanical, electrical, validation and telecommunications engineering fields.
The Life Sciences segment provides contract, contract-to-permanent and direct placement services of laboratory and scientific professionals to the biotechnology, pharmaceutical, food and beverage, medical device, personal care, chemical and environmental industries. These contract staffing specialties include chemists, clinical research associates, clinical lab assistants, engineers, biologists, biochemists, microbiologists, molecular biologists, food scientists, regulatory affairs specialists, lab assistants and other skilled scientific professionals.
The Physician segment provides contract and direct placement physicians to healthcare organizations. The Physician segment works with nearly all medical specialties, placing locum tenens physicians in hospitals, community-based practices, and federal, state and local facilities.
The Healthcare segment provides contract, contract-to-permanent and direct placement of professionals from a number of healthcare, medical financial and allied occupations. These contract staffing specialties include local nurses, respiratory therapists, surgical technicians, imaging technicians, x-ray technicians, medical technologists, phlebotomists, coders, billers, claims processors and collections staff.
The Company’s management evaluates the performance of each segment primarily based on revenues, gross profit and operating income. The information in the following table is derived directly from the segments’ internal financial reporting used for corporate management purposes.
The following table represents revenues, gross profit and operating income by reportable segment (in thousands):

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Revenues: |  |  |  |  |  |
Apex |  | $ | 508,743 |  |  | $ | — |  |  | $ | — |
Oxford (formerly IT and Engineering) |  | 345,380 |  |  | 266,742 |  |  | 178,688 |
Life Sciences |  | 162,799 |  |  | 155,324 |  |  | 109,495 |
Physician |  | 102,679 |  |  | 80,617 |  |  | 73,595 |
Healthcare |  | 57,914 |  |  | 44,956 |  |  | 39,542 |
|  | $ | 1,177,515 |  |  | $ | 547,639 |  |  | $ | 401,320 |
Gross Profit: |  |  |  |  |  |  |  |
Apex |  | $ | 140,669 |  |  | $ | — |  |  | $ | — |
Oxford (formerly IT and Engineering) |  | 122,043 |  |  | 94,967 |  |  | 64,775 |
Life Sciences |  | 55,874 |  |  | 52,643 |  |  | 37,776 |
Physician |  | 31,455 |  |  | 25,858 |  |  | 23,847 |
Healthcare |  | 18,495 |  |  | 14,360 |  |  | 12,933 |
|  | $ | 368,536 |  |  | $ | 187,828 |  |  | $ | 139,331 |
Operating Income (Loss): |  |  |  |  |  |  |  |
Apex (1) |  | $ | 21,593 |  |  | $ | — |  |  | $ | — |
Oxford (formerly IT and Engineering) |  | 48,802 |  |  | 31,816 |  |  | 13,910 |
Life Sciences |  | 11,626 |  |  | 10,727 |  |  | 5,305 |
Physician |  | 8,383 |  |  | 5,347 |  |  | 5,010 |
Healthcare |  | (5,452 | ) |  | (7,807 | ) |  | (8,004 | )
|  | $ | 84,952 |  |  | $ | 40,083 |  |  | $ | 16,221 |
____ |  |  |  |  |  |

(1) Apex operating income includes acquisition related costs of $9.8 million for the twelve months ended December 31, 2012.
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The Company does not report Life Sciences and Healthcare segments’ total assets separately as the operations are largely centralized. The following table represents total assets as allocated by reportable segment (in thousands):

|  | December 31,
|  | 2012 |  | 2011 |  | 2010
Total Assets: |  |  |  |  |  |
Apex |  | $ | 642,594 |  |  | $ | — |  |  | $ | — |
Oxford (formerly IT and Engineering) |  | 231,211 |  |  | 218,810 |  |  | 202,229 |
Life Sciences and Healthcare |  | 139,601 |  |  | 107,915 |  |  | 74,979 |
Physician |  | 84,615 |  |  | 83,940 |  |  | 63,908 |
|  | $ | 1,098,021 |  |  | $ | 410,665 |  |  | $ | 341,116 |

The Company does not report all assets by segment for all reportable segments. The following table represents identifiable assets by reportable segment (in thousands):

|  | December 31,
|  | 2012 |  | 2011 |  | 2010
Gross Accounts Receivable: |  |  |  |  |  |
Apex |  | $ | 132,575 |  |  | $ | — |  |  | $ | — |
Oxford (formerly IT and Engineering) |  | 56,336 |  |  | 47,658 |  |  | 30,725 |
Life Sciences |  | 21,041 |  |  | 21,727 |  |  | 14,107 |
Healthcare |  | 18,116 |  |  | 11,568 |  |  | 9,628 |
Physician |  | 18,905 |  |  | 15,749 |  |  | 10,233 |
|  | $ | 246,973 |  |  | $ | 96,702 |  |  | $ | 64,693 |

The Company operates internationally, with operations in the United States, Europe, Canada, China, Australia, and New Zealand. The following table represents revenues by geographic location (in thousands):

|  | Year Ended December 31,
|  | 2012 |  | 2011 |  | 2010
Revenues: |  |  |  |  |  |
Domestic |  | $ | 1,099,746 |  |  | $ | 479,508 |  |  | $ | 370,572 |
Foreign |  | 77,769 |  |  | 68,131 |  |  | 30,748 |
|  | $ | 1,177,515 |  |  | $ | 547,639 |  |  | $ | 401,320 |

The following table represents long-lived assets by geographic location (in thousands):

|  | December 31,
|  | 2012 |  | 2011 |  | 2010
Long-lived Assets: |  |  |  |  |  |
Domestic |  | $ | 40,062 |  |  | $ | 19,078 |  |  | $ | 19,826 |
Foreign |  | 2,006 |  |  | 1,033 |  |  | 754 |
|  | $ | 42,068 |  |  | $ | 20,111 |  |  | $ | 20,580 |

14. Derivative Instruments.
The Company utilizes derivative financial instruments to manage interest rate risk. The Company does not use derivative financial instruments for trading or speculative purposes, nor does it use leveraged financial instruments. The Company reports its derivative instruments separately as assets and liabilities unless a legal right of set-off exists under a master netting agreement enforceable by law. The Company’s derivative instruments are recorded at their fair value, and are included in other long-term assets, other long-term liabilities and other liabilities in the Consolidated Balance Sheets.
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Effective August 8, 2012, the Company entered into three interest rate cap agreements to hedge a portion of its interest rate exposure on its senior secured debt (collectively referred to as the Interest Rate Caps). Under the terms of the Interest Rate Caps, the one month LIBOR rate will not exceed 3.0 percent. From a practical standpoint, the interest rate in the hedged portion of the debt is limited to a maximum of 3.0 percent plus the Eurodollar applicable margin. The total initial notional amount was $223.1 million and is scheduled to decline over the term of the Interest Rate Caps. Each of the Interest Rate Caps terminates on August 10, 2015.
On February 18, 2011, the Company entered into an interest rate swap agreement to hedge a portion of its interest rate exposure on its senior secured debt (the Interest Rate Swap). The Interest Rate Swap has a notional amount of $25.0 million and fixes a portion of the Company’s base borrowing rate, which is a floating rate based on a LIBOR swap rate that resets periodically.
The Interest Rate Caps and the Interest Rate Swap were designated as hedging instruments for accounting purposes and are accounted for as a cash flow hedges. The effective portion of unrealized losses on cash flow hedges are included in accumulated other comprehensive income until the periodic interest settlements occur, at which time they will be recorded as interest expense in the Consolidated Statements of Operations and Comprehensive Income. The Company expects to reclassify losses of $0.4 million (pretax) from accumulated other comprehensive income to interest expense in the Consolidated Statements of Operation within the next twelve months.
As a result of the use of derivative instruments, the Company is exposed to risk that the counterparties will fail to meet their contractual obligations. To mitigate the counterparty credit risk, the Company only enters into contracts with carefully selected major financial institutions based upon their credit ratings and other factors, and continually assess the creditworthiness of counterparties. As of December 31, 2012, the counterparty to the interest rate contracts had investment grade ratings and has performed in accordance with their contractual obligations.
The fair values of derivative instruments in the Consolidated Balance Sheets as of December 31, 2012 and 2011 are as follows (in thousands):

Derivative designated as hedging instrument under ASC 815 |  | Balance Sheet Classification |  | 2012 |  | 2011
Interest rate contracts |  | Other long-term assets |  | $ | 69 |  |  | $ | — |
Interest rate contracts |  | Other liabilities |  | (362 | ) |  | (310 | )
Interest rate contracts |  | Other long-term liabilities |  | (55 | ) |  | (298 | )
|  |  |  | $ | (348 | ) |  | $ | (608 | )

The following tables reflect the effect of derivative instruments on the Consolidated Statements of Operations and Comprehensive Income (Loss) for the years ended December 31, 2012, 2011 and 2010 (in thousands):

Derivatives in Cash Flow Hedging Relationships | Amount of Gain/Loss Recognized in Accumulated Other Comprehensive Income on Derivative
| 2012 |  | 2011 |  | 2010
Interest rate contracts | $ | (21 | ) |  | $ | (380 | ) |  | $ | — |

| Location of Gain/Loss Reclassified from Accumulated Other Comprehensive Income into Income | Amount of Gain/Loss Reclassified from Accumulated Other Comprehensive Income into Income
|  | 2012 |  | 2011 |  | 2010
Interest rate contracts | Interest expense | $ | 369 |  |  | $ | 310 |  |  | $ | — |

15. Fair Value Measurements.
The valuation techniques utilized are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect internal market assumptions. These two types of inputs create the following fair value hierarchy:
Level 1: Quoted market prices in active markets for identical assets or liabilities.
Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.
Level 3: Unobservable inputs that are not corroborated by market data.
The recorded values of cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate their fair value based on their short-term nature. Long-term debt recorded in the Company’s Consolidated Balance Sheets at December 31, 2012 was $426.6 million. The fair value of the long-term debt was determined using the quoted price technique, based on Level 2 inputs including the yields of comparable companies with similar credit characteristics, was $430.0 million.
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The interest rate swap and interest rate caps are measured using the income approach. The fair value reflects the estimated amounts that the Company would pay or receive based on the present value of the expected cash flows derived from market rates and prices. As such, these derivative instruments are classified within Level 2.
The Company has obligations, to be paid in cash, to the former owners of Valesta and HCP, if certain future financial goals are met. The fair value of this contingent consideration is determined using an expected present value technique. Expected cash flows are determined using the probability - weighted average of possible outcomes that would occur should certain financial metrics be reached. There is no market data available to use in valuing the contingent consideration, therefore, the Company developed its own assumptions related to the future financial performance of the businesses to evaluate the fair value of these liabilities. As such, the contingent consideration is classified within Level 3.
In connection with estimating the fair value of the contingent consideration, the Company develops various scenarios (base case, downside case, and upside case) and weights each according to the probability of occurrence. The probabilities range from 10 percent to 80 percent, with the most significant weighting given to the base case at 80 percent. These scenarios are developed based on the expected financial performance of the acquired companies, with revenue growth rates being a primary input to the calculation. These revenue growth rates range from (4.0) percent to 16.1 percent. An increase or decrease in the probability of achievement of any of these scenarios could result in a significant increase or decrease to the estimated fair value.
The fair value is reviewed on a quarterly basis based on most recent financial performance of the most recent fiscal quarter. An analysis is performed at the end of each fiscal quarter to compare actual results to forecasted financial performance. If performance has deviated from projected levels, the valuation is updated for the latest information available.
The significant assumptions that may materially affect the fair value are developed in conjunction with the guidance of the division presidents, division vice presidents, and chief financial officer to ensure that the most accurate and latest financial projections are used and compared with the most recent financial results in the fair value measurement.
The liabilities for the contingent consideration were established at the time of the acquisition and are evaluated at each reporting period. The current liability is included in the Consolidated Balance Sheets in the current portion of accrued earn-outs and the non-current portion is included in accrued earn-outs. Fair value adjustments are included in the Consolidated Statements of Operations and Comprehensive Income in S&GA expenses.
The assets and liabilities measured at fair value on a recurring basis are as follows (in thousands):

|  | As of December 31, 2012
|  | Fair Value Measurements Using |  | Total
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  |
Interest rate contracts |  | $ | — |  |  | $ | (348 | ) |  | $ | — |  |  | $ | (348 | )
Contingent consideration to be paid in cash for the acquisitions |  | $ | — |  |  | $ | — |  |  | $ | (7,577 | ) |  | $ | (7,577 | )

|  | As of December 31, 2011
|  | Fair Value Measurements Using |  | Total
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  |
Interest rate contracts |  | $ | — |  |  | $ | (608 | ) |  | $ | — |  |  | $ | (608 | )
Contingent consideration to be paid in cash for the acquisitions |  | $ | — |  |  | $ | — |  |  | $ | (9,856 | ) |  | $ | (9,856 | )

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Reconciliations of liabilities measured and carried at fair value on a recurring basis with the use of significant unobservable inputs (Level 3) are as follows (in thousands):

|  | Year Ended December 31,
|  | 2012 |  | 2011
Contingent consideration for acquisitions -- |  |  |  |
Balance at beginning of year |  | $ | (9,856 | ) |  | $ | (3,700 | )
Additions for acquisitions |  | — |  |  | (10,346 | )
Payments on contingent consideration |  | 1,198 |  |  | 1,731 |
Settlements of contingent consideration |  | — |  |  | 1,369 |
Fair value adjustments |  | 1,215 |  |  | 640 |
Foreign currency translation adjustment |  | (134 | ) |  | 450 |
Balance at end of year |  | $ | (7,577 | ) |  | $ | (9,856 | )

Certain assets and liabilities, such as goodwill, are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (e.g., when there is evidence of impairment). For 2012, no fair value adjustments were required for non-financial assets or liabilities.
16. Subsequent Event.
On February 12, 2013, the Company sold its Nurse Travel Division, included in the Healthcare segment, for $31.0 million in cash. The Nurse Travel Division was not deemed to be a core offering and represented approximately five percent of revenues in 2012. The Company has agreed to provide certain back office services during a transition period.
17. Unaudited Quarterly Results.
The following tables present unaudited quarterly financial information during the years ended December 31, 2012 and 2011. In the opinion of the Company’s management, the quarterly information contains all adjustments, consisting only of normal recurring accruals, necessary for a fair presentation thereof. The operating results for any quarter are not necessarily indicative of the results for any future periods.
Subsequent to the issuance of the Company's quarterly report on Form 10-Q for the second quarter of 2012, the Company identified an immaterial classification error of $0.5 million related to certain vendor fees paid by Apex Systems, Inc., which we acquired in May 2012 (see Note 4 - Acquisitions). Such fees should have been recorded as revenues, rather than in costs of services. The Company considers this an immaterial reclassification and has presented the revenues and cost of services for the year ended December 31, 2012 reflecting the reclassification in the pro forma revenues in Note 4 - Acquisitions, and revenues in the table below. The Company will present the corrected results for the three and six months ended June 30, 2012 in future filings. This reclassification has no effect on the Company's consolidated balance sheets or consolidated statement of cash flows.
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|  | 2012
|  | Dec. 31, |  | Sep. 30, |  | Jun. 30, |  | Mar. 31,
|  | (in thousands, except per share data)
Revenues |  | $ | 380,381 |  |  | $ | 374,511 |  |  | $ | 265,863 |  |  | $ | 156,760 |
Gross profit |  | $ | 115,619 |  |  | $ | 115,631 |  |  | $ | 84,537 |  |  | $ | 52,749 |
Income from continuing operations |  | $ | 9,748 |  |  | $ | 16,586 |  |  | $ | 7,030 |  |  | $ | 5,047 |
Income from discontinued operations, net of income taxes |  | 1,574 |  |  | 847 |  |  | 1,485 |  |  | 336 |
Net income |  | $ | 11,322 |  |  | $ | 17,433 |  |  | $ | 8,515 |  |  | $ | 5,383 |
Basic earnings per common share: |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.19 |  |  | $ | 0.32 |  |  | $ | 0.16 |  |  | $ | 0.14 |
Income from discontinued operations |  | 0.03 |  |  | 0.01 |  |  | 0.03 |  |  | — |
Net income |  | $ | 0.22 |  |  | $ | 0.33 |  |  | $ | 0.19 |  |  | $ | 0.14 |
Diluted earnings per common share: |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.18 |  |  | $ | 0.31 |  |  | $ | 0.15 |  |  | $ | 0.13 |
Income from discontinued operations |  | 0.03 |  |  | 0.02 |  |  | 0.04 |  |  | 0.01 |
Net income |  | $ | 0.21 |  |  | $ | 0.33 |  |  | $ | 0.19 |  |  | $ | 0.14 |

|  | 2011
|  | Dec. 31, |  | Sep. 30, |  | Jun. 30, |  | Mar. 31,
|  | (in thousands, except per share data)
Revenues |  | $ | 148,029 |  |  | $ | 147,014 |  |  | $ | 132,862 |  |  | $ | 119,734 |
Gross profit |  | $ | 50,151 |  |  | $ | 50,793 |  |  | $ | 46,179 |  |  | $ | 40,705 |
Income from continuing operations |  | $ | 6,636 |  |  | $ | 6,843 |  |  | $ | 5,450 |  |  | $ | 2,821 |
Income from discontinued operations, net of income taxes |  | 865 |  |  | 924 |  |  | 415 |  |  | 343 |
Net income |  | $ | 7,501 |  |  | $ | 7,767 |  |  | $ | 5,865 |  |  | $ | 3,164 |
Basic earnings per common share: |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.18 |  |  | $ | 0.18 |  |  | $ | 0.15 |  |  | $ | 0.08 |
Income from discontinued operations |  | 0.02 |  |  | 0.03 |  |  | 0.01 |  |  | 0.01 |
Net income |  | $ | 0.20 |  |  | $ | 0.21 |  |  | $ | 0.16 |  |  | $ | 0.09 |
Diluted earnings per common share: |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.18 |  |  | $ | 0.18 |  |  | $ | 0.14 |  |  | $ | 0.08 |
Income from discontinued operations |  | 0.02 |  |  | 0.03 |  |  | 0.02 |  |  | — |
Net Income |  | $ | 0.20 |  |  | $ | 0.21 |  |  | $ | 0.16 |  |  | $ | 0.08 |

39

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Stockholders of On Assignment, Inc.
Calabasas, California
We have audited the internal control over financial reporting of On Assignment, Inc. and subsidiaries (the “Company”) as of December 31, 2012, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. As described in Management's Report on Internal Control Over Financial Reporting, management excluded from its assessment the internal control over financial reporting at Apex Systems, Inc., which was acquired on May 15, 2012 and whose financial statements constitute 47% and 59% of net and total assets, respectively, 43% of revenues, and -17% of net income of the consolidated financial statement amounts as of and for the year ended December 31, 2012. Accordingly, our audit did not include the internal control over financial reporting at Apex Systems, Inc. The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company's internal control over financial reporting is a process designed by, or under the supervision of, the company's principal executive and principal financial officers, or persons performing similar functions, and effected by the company's board of directors, management, and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.
Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2012, based on the criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements and financial statement schedule as of and for the year ended December 31, 2012 of the Company and our report dated March 18, 2013 (except Note 5, as to which the date is June 13, 2013) expressed an unqualified opinion on those financial statements and financial statement schedule and included an explanatory paragraph regarding the acquisition of Apex Systems, Inc.
/s/ Deloitte & Touche LLP
Los Angeles, California
March 18, 2013
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Item 9A. Controls and Procedures
Evaluation of Disclosure Controls and Procedures
As of the end of the period covered by this report, the Company’s management carried out an evaluation, under the supervision and with the participation of our Principal Executive Officer and Principal Financial Officer, of the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) of the Securities Exchange Act of 1934). Based on this evaluation, our Principal Executive Officer and Principal Financial Officer have concluded that our disclosure controls and procedures are effective as of the end of the period covered by this report. The term “disclosure controls and procedures” means controls and other procedures of the Company that are designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. “Disclosure controls and procedures” include, without limitation, controls and procedures designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Securities Exchange Act of 1934 is accumulated and communicated to the Company’s management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.
Management’s Report on Internal Control Over Financial Reporting
Management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) of the Securities Exchange Act of 1934) for the Company. The term “internal control over financial reporting” is defined as a process designed by, or under the supervision of, the Company’s principal executive and principal financial officers, or persons performing similar functions, and effected by the Company’s board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:

• | Pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company;

• | Provide reasonable assurance that the transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and

• | Provide reasonable assurance regarding prevention of timely detection of unauthorized acquisition, use, or disposition of the Company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with policies or procedures may deteriorate.
Management, under the supervision and with the participation of our Principal Executive Officer and Principal Financial Officer, assessed the effectiveness of the Company’s internal control over financial reporting as of December 31, 2012. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control-Integrated Framework. Based on our assessment and those criteria, management believes that the Company maintained effective internal control over financial reporting as of December 31, 2012. Our independent registered public accounting firm, Deloitte & Touche LLP, has included an attestation report on our internal control over financial reporting, which is included above.
For purposes of conducting its 2012 evaluation of the effectiveness of the Company's internal control over financial reporting,
management has excluded the acquisition of Apex, completed on May 15, 2012, whose financial statements constitute 47 percent and 59 percent of net and total assets, respective ly, 43.2 percent of revenues, and -17.0 percent of net income, of the consolidated financial statement amounts as of and for the year ended December 31, 2012. Refer to Note 4 in Part II, Item 8 of this report for further discussion of the acquisitions and their impact on the Company's Consolidated Financial Statements.
Changes in Internal Controls
There were no changes in the Company’s internal control over financial reporting that occurred during the Company’s fourth quarter that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.
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Item 15. Exhibits and Financial Statement Schedule
(a) List of documents filed
1. Financial Statements:
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets at December 31, 2012 and 2011
Consolidated Statements of Operations and Comprehensive Income (Loss) for the Years Ended December 31, 2012, 2011 and 2010
Consolidated Statements of Stockholders’ Equity for the Years Ended December 31, 2012, 2011 and 2010
Consolidated Statements of Cash Flows for the Years Ended December 31, 2012, 2011 and 2010
Notes to Consolidated Financial Statements
2. Financial Statement Schedule:
Schedule II—Valuation and Qualifying Accounts
Schedules other than those referred to above have been omitted because they are not applicable or not required under the instructions contained in Regulation S-X or because the information is included elsewhere in the financial statements or notes thereto.
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ON ASSIGNMENT, INC. AND SUBSIDIARIES
SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS
Year Ended December 31, 2012, 2011 and 2010
(In thousands)

Description |  | Balance at beginning of year |  | Provisions |  | Deductions from reserves |  | Balance at end of year
Year ended December 31, 2012 |  |  |  |  |  |  |  |
Allowance for doubtful accounts and billing adjustments |  | $ | 2,777 |  |  | (166 | ) |  | 1,359 |  |  | $ | 3,970 |
Workers’ compensation and medical malpractice loss reserves |  | $ | 10,401 |  |  | 3,594 |  |  | (3,668 | ) |  | $ | 10,327 |
Year ended December 31, 2011 |  |  |  |  |  |  |  |
Allowance for doubtful accounts and billing adjustments |  | $ | 2,175 |  |  | 1,127 |  |  | (525 | ) |  | $ | 2,777 |
Workers’ compensation and medical malpractice loss reserves |  | $ | 10,244 |  |  | 2,339 |  |  | (2,182 | ) |  | $ | 10,401 |
Year ended December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts and billing adjustments |  | $ | 1,949 |  |  | 644 |  |  | (418 | ) |  | $ | 2,175 |
Workers’ compensation and medical malpractice loss reserves |  | $ | 10,349 |  |  | 4,310 |  |  | (4,415 | ) |  | $ | 10,244 |

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