RESTRICTED CASH AND INVESTMENTS

Restricted cash and investments consist principally of collateral that has been provided or pledged to insurance carriers for workers' compensation and state workers' compensation programs. Our insurance carriers and certain state workers' compensation programs require us to collateralize a portion of our workers' compensation obligation. The collateral typically takes the form of cash and cash equivalents, and highly rated investment grade securities, primarily in municipal debt securities, corporate debt securities, asset-backed securities, and U.S. agency debentures. The majority of our collateral obligations are held in a trust ("Trust") at the Bank of New York Mellon. Our investments have not resulted in any other-than-temporary impairments.

The following is a summary of restricted cash and investments (in millions):



	March 28, 2014		December 27, 2013
Cash collateral held by insurance carriers	$	23.0	$	23.7
Cash and cash equivalents held in Trust (1)	37.1		31.5
Investments held in Trust	81.9		86.7
Cash collateral backing letters of credit	1.9		1.9
Other (2)	7.5		10.8
Total restricted cash and investments	$	151.4	$	154.6


(1)	Included in this amount is $0.8 million of accrued interest at March 28, 2014 and December 27, 2013.


(2)	Consists of restricted cash in money market accounts and deferred compensation plan accounts, which are comprised of mutual funds.

The following tables present fair value disclosures for our held-to-maturity investments, which are carried at amortized cost (in millions):



	March 28, 2014
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Municipal debt securities	$	50.2	$	0.8	$	(0.3	)	$	50.7
Corporate debt securities	19.6		0.2		(0.2		)	19.6
Asset-backed securities	12.1		0.2		—			12.3
	$	81.9	$	1.2	$	(0.5	)	$	82.6



	December 27, 2013
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Municipal debt securities	$	54.1	$	0.7	$	(0.4	)	$	54.4
Corporate debt securities	19.7		0.2		(0.3		)	19.6
Asset-backed securities	12.9		0.1		(0.1		)	12.9
	$	86.7	$	1.0	$	(0.8	)	$	86.9

The amortized cost and fair value by contractual maturity of our held-to-maturity investments are as follows (in millions):



	March 28, 2014
	Amortized Cost		Fair Value
Due in one year or less	$	10.9	$	10.9
Due after one year through five years	41.2		41.9
Due after five years through ten years	29.8		29.8
	$	81.9	$	82.6

Actual maturities may differ from contractual maturities because the issuers of certain debt securities have the right to call or prepay their obligations without penalty.