17. Retirement Benefit Arrangements

For employee retirement benefits, the Company maintains certain defined contributions plans and other active and frozen defined benefit plans. The majority of the defined benefit obligation at December 31, 2015 relates to the active defined benefit plan for the Company’s Zurich office employees (the Zurich Plan).

Defined Contribution Plans

Contributions are made by the Company, and in some locations, these contributions are supplemented by the local plan participants. Contributions are based on a percentage of the participant’s base salary depending upon competitive local market practice and vesting provisions meeting legal compliance standards and market trends. The accumulated benefits for the majority of these plans vest immediately or over a four-year period. As required by law, certain retirement plans also provide for death and disability benefits and lump sum indemnities to employees upon retirement.

The Company incurred expenses for these defined contribution arrangements of $13.4 million, $15.9 million and $14.5 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Active Defined Benefit Plan

The Company maintains the Zurich Plan, which is classified as a hybrid plan and accounted for as a defined benefit plan under U.S. GAAP. At December 31, 2015 and 2014, the funded status of the Zurich Plan was as follows (in thousands of U.S. dollars):



	2015			2014
Funded status
Unfunded pension obligation at beginning of year	$	41,365		$	24,614
Change in pension obligation
Service cost	6,945			6,188
Interest cost	1,682			2,635
Plan participants’ contributions	2,504			1,838
Actuarial loss	7,550			15,796
Plan amendments	—			2,667
Benefits paid	(1,730		)	(7,392		)
Foreign currency adjustments	(465		)	(13,493		)
Change in pension obligation	16,486			8,239
Change in fair value of plan assets
Actual return on plan assets	1,594			1,707
Employer contributions	5,337			5,492
Plan participants’ contributions	2,504			1,838
Benefits paid	(1,730		)	(7,392		)
Foreign currency adjustments	(259		)	(10,157		)
Change in fair value of plan assets	7,446			(8,512		)
Funded status
Unfunded pension obligation at end of year	$	50,405		$	41,365
Additional information:
Projected benefit obligation at end of year	$	151,115		$	134,629
Accumulated pension obligation at end of year	141,716			127,322
Fair value of plan assets at end of year	100,710			93,264

At December 31, 2015 and 2014, the funded status was included in Accounts payable, accrued expenses and other in the Consolidated Balance Sheets. The total amounts recognized in Accumulated other comprehensive loss at December 31, 2015 and 2014 were $29.2 million (net of $7.9 million of taxes) and $25.4 million (net of $6.8 million of taxes), respectively.

The net periodic benefit cost for the years ended December 31, 2015, 2014 and 2013 was $9.6 million, $7.3 million and $10.7 million, respectively.

The investment strategy of the Zurich Plan’s Pension Committee is to achieve a consistent long-term return, which will provide sufficient funding for future pension obligations while limiting risk. The expected long-term rate of return on plan assets is based on the expected asset allocation and assumptions concerning long-term interest rates, inflation rates and risk premiums for equities above the risk-free rates of return. These assumptions take into consideration historical long-term rates of return for the relevant asset categories. The investment strategy is reviewed regularly.

The fair value of the Zurich Plan’s assets at December 31, 2015 and 2014 were insured funds and cash (Level 2) of $100.7 million and $93.3 million, respectively. The insured funds comprise the accumulated pension plan contributions and investment returns thereon, which are held in an insurance arrangement that provides at least a guaranteed minimum investment return. The insured funds are held by a collective foundation of AXA Life Ltd. and are guaranteed under the insurance arrangement.

The assumptions used to determine the Zurich Plan’s pension obligation and net periodic benefit cost for the years ended December 31, 2015, 2014 and 2013 were as follows:



	2015				2014				2013
	Pension obligation		Net periodic benefit cost		Pension obligation		Net periodic benefit cost		Pension obligation		Net periodic benefit cost
Discount rate	1.00	%	1.25	%	1.25	%	2.25	%	2.25	%	1.75	%
Expected return on plan assets	—		1.25	%	—		2.25	%	—		1.75	%
Rate of compensation increase	2.25	%	2.25	%	2.25	%	2.50	%	2.50	%	2.50	%

At December 31, 2015, estimated employer contributions to be paid in 2016 related to the Zurich Plan were $4.9 million and future benefit payments were estimated to be paid as follows (in thousands of U.S. dollars):



Year	Amount
2016	$	4,566
2017	4,531
2018	4,264
2019	4,244
2020	4,454
2021 to 2025	30,061

The Company does not believe that any of the Zurich Plan’s assets will be returned to the Company during 2016.