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Employee Retirement and Benefit Plans
 12 Months Ended
Dec. 31, 2021
Retirement Benefits [Abstract]  
Employee Retirement Plans Employee Retirement and Benefit Plans
Defined contribution employee savings plans
The Company’s qualified defined contribution employee savings plan allows eligible participants to defer, within prescribed limits, up to 75% of their income on a pre-tax basis through a portion of their salary and accumulate tax-deferred earnings as a retirement fund. The Company contributed $0.4 million for the year ended December 31, 2021 and $0.6 million for each of the years ended December 31, 2020 and 2019 to its defined contribution employee savings plan. The Company’s contributions vest over a five-year period.
Pension plans
As of December 31, 2021, approximately 1,600 of the Company’s employees were members of various unions and covered by union-sponsored, collectively bargained, multiemployer health and welfare and defined benefit pension plans. The Company recorded $9.1 million, $7.1 million and $11.8 million in expenses for these plans for the years ended December 31, 2021, 2020 and 2019, respectively. The Company has no obligation to fund the plans beyond payments made based upon hours worked. The risks of participating in multiemployer plans are different from single-employer plans, including in the following aspects:
•Assets contributed to multiemployer plans by one employer may be used to provide benefits to employees of other participating employers;
•If a participating employer stops contributing to a multiemployer plan, the unfunded obligations of the multiemployer plan may be required to be borne by the remaining participating employers; and
•If an entity chooses to stop participating in some of its multiemployer plans, the entity may be required to pay those plans an amount based on the underfunded status of those plans, referred to as a “withdrawal liability.”
The Company considers the following multiemployer pension plans to be significant:
Pension Protection Zone Status (1)
FIR/RP Status Pending/ImplementedSurcharge ImposedExpiration Date Of Collective-
Bargaining Agreement
Multiemployer Pension PlansEIN/Plan Number20202019
Central Pension Fund of the IUOE and Participating Employers36-6052390-001 Green  Green  No  No 3/31/2022
Southern Nevada Culinary and Bartenders Pension Plan88-6016617-001 Green  Green  No  No 5/31/2023
(1)The Pension Protection Act of 2006 requires plans that are certified as endangered (yellow) or critical (red) to develop and implement a funding improvement plan.
The Company’s cash contributions to each multiemployer pension and benefit plans are as follows:
December 31,
(In thousands)202120202019
Multiemployer pension plans
Central Pension Fund of the IUOE and Participating Employers$637 $545 $704 
Southern Nevada Culinary and Bartenders Pension Plan1,645 1,356 2,130 
Other pension plans146 142 198 
Total contributions$2,428 $2,043 $3,032 
Multiemployer benefit plans (excluding pension plans)
HEREIU Welfare Fund$6,353 $5,216 $8,757 
All other— 3 4 
Total contributions$6,353 $5,219 $8,761 
For the 2020 plan year, the latest period for which plan data is available, the Company made less than 5% of total contributions for all multiemployer pension plans to which the Company contributes.