13.	RETIREMENT PLANS

The Company has defined benefit and defined contribution retirement plans for its employees, and provides certain health care benefits to eligible retirees and their dependents. The components of net periodic benefit costs for pension and other postretirement benefits, for Company sponsored plans, are provided below (in thousands):

	13-Weeks Ended
	Pension Benefits						Other Postretirement Benefits
	July 1, 2017			July 2, 2016			July 1, 2017			July 2, 2016
Components of Net periodic benefit costs
Service cost	$	506		$	959		$	9		$	10
Interest cost		10,139			10,413			72			74
Expected return on plan assets		(11,964	)		(11,927	)		—			—
Amortization of prior service cost		34			40			2			1
Amortization of net loss (gain)		1,050			2,268			(13	)		(18	)
Settlements		2,000			750			—			—
Net periodic benefit costs	$	1,765		$	2,503		$	70		$	67

	26-Weeks Ended
	Pension Benefits						Other Postretirement Benefits
	July 1, 2017			July 2, 2016			July 1, 2017			July 2, 2016
Components of Net periodic benefit costs
Service cost	$	1,012		$	1,925		$	19		$	19
Interest cost		20,277			20,230			144			148
Expected return on plan assets		(23,928	)		(24,148	)		—			—
Amortization of prior service cost		69			79			3			3
Amortization of net loss (gain)		2,101			4,128			(26	)		(36	)
Settlements		2,000			1,500			—			—
Net periodic benefit costs	$	1,531		$	3,714		$	140		$	134

In the second quarter of 2017, the Company approved a plan amendment to offer voluntary lump sum settlement payments to certain former employees participating in the Company sponsored defined benefit plan. The plan amendment is expected to be finalized and communicated to relevant participants in the third quarter of 2017. Lump sum settlement payments are estimated at approximately $100 million, based on the expected participation rate, and will be paid from pension plan assets. As a result of the plan amendment, the Company expects to incur non-cash settlement charges of approximately $30 million in fiscal year 2017, including approximately $25 million in the fourth quarter, when the lump sum settlements are expected to be paid. Settlement charges are included in Distribution, selling and administrative costs in the Consolidated Statements of Comprehensive Income (Loss).

The Company contributed $36 million to its defined benefit and other postretirement plans during both 26-week periods ended July 1, 2017 and July 2, 2016. The Company has funded all required contributions to the Company-sponsored pension plans for fiscal year 2017.

The Company’s employees are eligible to participate in a Company sponsored defined contribution 401(k) Plan which provides for Company matching on the participant’s contributions of up to 100% of the first 3% of participant’s compensation and 50% of the next 2% of a participant’s compensation, for a maximum Company matching contribution of 4%. The Company’s contributions to this plan were $11 million and $10 million for the 13-weeks ended July 1, 2017 and July 2, 2016, respectively, and $23 million and $22 million for the 26-weeks ended July 1, 2017 and July 2, 2016, respectively.

The Company also contributes to numerous multiemployer pension plans under the terms of certain of its collective bargaining agreements that cover its union-represented employees. The Company does not administer these multiemployer pension plans. The Company’s contributions to these plans were $9 million and $8 million for the 13-week periods ended July 1, 2017 and July 2, 2016, respectively, and $17 million and $16 million for the 26-week periods ended July 1, 2017 and July 2, 2016, respectively.