Title 29 › Chapter 18— EMPLOYEE RETIREMENT INCOME SECURITY PROGRAM › Subchapter III— PLAN TERMINATION INSURANCE › Subtitle Subtitle E— Special Provisions for Multiemployer Plans › Part 1— employer withdrawals › § 1399
An employer must give the plan manager any written information the manager asks for within 30 days. If an employer completely or partly leaves the plan, the plan manager must quickly tell the employer how much it owes, give a payment schedule, and demand payment. The employer then has 90 days after that notice to ask for a review, point out errors, and give more facts. After looking into it, the plan manager must tell the employer the decision, explain the reasons, and explain any change to the amount or schedule. The amount owed is worked out under other pension rules and paid as level annual payments over an amortization period based on the plan’s latest actuarial assumptions, with payments treated as if the first were due on the first day of the plan year after the withdrawal. If the amortization would be more than 20 years, the employer’s liability is limited to the first 20 annual payments, except when all or nearly all employers leave and the plan is ending — then the full unfunded amount is allocated among employers. Each annual payment is usually the average of 3 high years of contribution units (within a 10-year lookback) times the highest contribution rate in the 10-year lookback. Payments must start no later than 60 days after the demand even if a review or appeal is pending. Annual amounts are paid in four equal quarterly installments (or other plan intervals); late payments incur interest. An employer may prepay without penalty, but prepayment won’t limit liability if the withdrawal is later treated as a full withdrawal. On default, the plan can demand immediate payment of the rest plus interest from the first missed due date. Interest rates follow market-based rules set by the corporation. Plans may set other terms if they follow the law and the corporation’s rules. Payments stop at the end of the plan year when plan assets (excluding withdrawal claims) cover all obligations as the corporation determines. Defined term: Default — failing to pay when due and not fixing it within 60 days after written notice, or another plan event showing the employer likely cannot pay.
Full Legal Text
Labor — Source: USLM XML via OLRC
Legislative History
Reference
Citation
29 U.S.C. § 1399
Title 29 — Labor
Last Updated
Apr 5, 2026
Release point: 119-73not60