12.	ACCRUED EXPENSES AND OTHER LONG-TERM LIABILITIES

Accrued expenses and other long-term liabilities consisted of the following (in thousands). Prior year amounts may be reclassified to conform with the 2017 presentation, based on changes in significance.

	December 30, 2017		December 31, 2016
Accrued expenses and other current liabilities:
Salary, wages and bonus expenses	$	161,106	$	156,999
Operating expenses		67,764		71,140
Workers’ compensation, general and fleet liability		49,081		46,482
Group medical liability		28,974		27,480
Customer rebates and other selling expenses		85,210		80,223
Restructuring		4,586		22,623
Property and sales tax		28,478		25,032
Interest payable		5,578		3,469
Other		19,965		22,367
Total accrued expenses and other current liabilities	$	450,742	$	455,815
Other long-term liabilities:
Workers’ compensation, general and fleet liability	$	121,270	$	117,890
Accrued pension and other postretirement benefit obligations		130,511		172,895
Unfunded lease obligation		24,138		26,757
Uncertain tax positions		81,237		11,115
Restructuring		749		838
Other		13,631		21,434
Total Other long-term liabilities	$	371,536	$	350,929

Self-Insured Liabilities —The Company is self-insured for general liability, fleet liability and workers’ compensation claims. Claims in excess of certain levels are insured. The workers’ compensation liability, included in the table above under “workers’ compensation, general liability and fleet liability,” is recorded at present value. This table summarizes self-insurance liability activity for the last three fiscal years (in thousands):

	2017			2016			2015
Balance at beginning of the year	$	164,372		$	172,243		$	160,904
Charged to costs and expenses		64,236			59,366			77,242
Reinsurance recoverable		8,068			—			—
Payments		(66,325	)		(67,237	)		(65,903	)
Balance at end of the year	$	170,351		$	164,372		$	172,243
Discount rate		1.98	%		1.47	%		0.82	%

Estimated future payments for self-insured liabilities are as follows (in thousands):

	2018	$	49,651
	2019		25,285
	2020		18,573
	2021		14,140
	2022		10,249
Thereafter			61,010
Total self-insured liability payments		$	178,908
Less amount representing interest			(8,557	)
Present value of self-insured liability payments		$	170,351