1. Description of Business and Basis of Presentation

Description of Business

We provide a broad range of technical, professional, and construction services including engineering, design, and architectural services; construction and construction management services; operations and maintenance services; and process, scientific, and systems consulting services. We provide our services through offices and subsidiaries located primarily in North America, South America, Europe, the Middle East, India, Australia, Africa, and Asia. We provide our services under cost-reimbursable and fixed-price contracts. The percentage of revenues realized from each of these types of contracts for the fiscal years ended September 29, 2017, September 30, 2016 and October 2, 2015 was as follows:

	For the Year Ended
	September 29, 2017		September 30, 2016			October 2, 2015
Cost-reimbursable		81%		82	%		83	%
Fixed-price		19%		18	%		17	%

Basis of Presentation, Definition of Fiscal Year, and Other Matters

The accompanying Consolidated Financial Statements have been prepared in accordance with U.S. GAAP and include the accounts of Jacobs Engineering Group Inc. and its subsidiaries and affiliates which it controls. All intercompany accounts and transactions have been eliminated in consolidation.

The Company’s fiscal year ends on the Friday closest to September 30 (determined on the basis of the number of workdays) and, accordingly, an additional week of activity is added every five -to- six years. Fiscal 2015 included an extra week of activity.

During the second quarter of fiscal 2016, we reorganized our operating and reporting structure around four lines of business (“LOB”). This reorganization is intended to better serve our global clients, leverage our workforce, help streamline operations, and provide enhanced growth opportunities. The four global LOBs are: Petroleum & Chemicals, Buildings & Infrastructure, Aerospace & Technology, and Industrial. Previously, the Company operated its business as a single segment. For a further discussion of our segment information, please refer to Note 15-Segment Information.

Please refer to Note 17— Definitions for the definitions of certain terms used in the accompanying Consolidated Financial Statements and these Notes to Consolidated Financial Statements.