Source: John J. Topoleski, Congressional Research Service, CRS Report, R43305, November 3, 2016
Multiemployer defined benefit (DB) pension plans are pensions sponsored by more than one employer and maintained as part of a collective bargaining agreement. About 3.2% of all DB pension plans, covering 5% of all DB pension plan participants, are multiemployer plans. Nearly all of the remaining DB pension plans are maintained by a single employer. A few DB pension plans are maintained by more than one employer but are not maintained under a collective bargaining agreement. In DB pension plans, participants receive a monthly benefit in retirement that is based on a formula. In multiemployer DB pensions, the formula typically multiplies a dollar amount by the number of years of service the employee has worked for employers that participate in the DB plan.
DB pension plans are subject to funding rules in the Internal Revenue Code (26 U.S.C. §431) to ensure they have sufficient resources from which to pay promised benefits. Because single employer and multiemployer DB pension plans have different structures, Congress has established separate funding rules for these plans.
Although most multiemployer DB pension plans have sufficient resources from which to pay their promised benefits, a few large plans are expected to become insolvent in the next 20 years. The Pension Benefit Guaranty Corporation (PBGC) is a U.S. government agency that insures the benefits of participants in private-sector DB pension plans. As with the funding rules, Congress established separate PBGC programs to insure single and multiemployer DB pensions. For example, PBGC becomes the trustee of terminated single employer DB pension plans. PBGC does not become the trustee of multiemployer DB pension plans; rather, it makes loans to insolvent multiemployer DB plans so the plans may continue to pay participants’ guaranteed benefits……