What Is a Taft-Hartley Plan and How Does It Work?

A Taft-Hartley plan is a multiemployer benefit fund built through collective bargaining between a labor union and two or more employers, usually in the same industry, and run by a board of trustees split evenly between labor and management. Employers pay in under the terms of the union contract, and the pooled money funds pensions, health coverage, and other benefits for covered workers and their families. About 1,400 multiemployer defined benefit pension plans operate in the United States, covering roughly 10 million participants.¹ The defining feature, from a worker’s point of view, is that your benefits stay with you as you move between participating employers instead of resetting at each new job.

How the Plan Is Governed

Every Taft-Hartley plan is run by a board of trustees, and federal law requires equal representation between labor and management. If the two sides deadlock, the plan documents usually name a neutral tiebreaker; when the parties can’t agree on one, a federal district court can appoint an impartial umpire.² This shared governance separates a Taft-Hartley plan from a single-employer benefit plan, where management alone calls the shots.

Trustees are fiduciaries. Whether appointed by the union or by an employer, each trustee owes loyalty to the plan and its participants, not to whoever put them on the board.¹ Trustees must manage assets prudently, keep expenses reasonable, and follow the plan documents unless doing so would break the law. A trustee who causes losses to the plan can be forced to repay them personally and can be removed by a court.³

How the Plan Is Funded

Money flows in almost entirely from employer contributions set in the collective bargaining agreement. Rates are typically tied to hours worked by covered employees rather than a flat amount per worker, so the plan’s income tracks the industry’s activity. Because many employers pay into a single pool, investment risk and administrative costs spread across a much wider base than any one company could manage alone. The trade-off is that every contributing employer shares responsibility for the plan’s overall financial health, which becomes especially important when an employer wants to leave.

When an employer stops contributing, federal law requires it to pay withdrawal liability equal to its share of the plan’s unfunded vested benefits, meaning the gap between promised benefits and current assets.⁴ The rule exists so employers can’t walk away and leave the remaining contributors to cover the shortfall.

What Benefits a Taft-Hartley Plan Can Provide

Federal law lets these trust funds pay for a broad range of benefits on behalf of covered workers and their families:²

Medical, dental, vision, and prescription drug coverage, along with life, disability, and accident insurance.
Defined benefit pensions, which pay a set monthly amount at retirement based on a formula, and defined contribution accounts. About three out of five multiemployer retirement plans are defined benefit pensions, with most of the rest being money purchase plans that set a fixed employer contribution to individual accounts.⁵
Pooled vacation, holiday, and severance funds.
Apprenticeship and workforce training programs.
Scholarships for workers and dependents, childcare, legal services, and unemployment benefits.

Not every Taft-Hartley plan offers every benefit on that list. What you actually get depends on what the union and the employers negotiated. Some plans handle only health benefits, others only retirement, and many cover both plus additional programs.

Portability and Reciprocity

Portability is the biggest practical advantage. If you move from one contributing employer to another within the same plan, your hours and service credits keep accumulating as though nothing changed. That matters a lot in industries like construction and entertainment, where short-term work with different contractors is the norm.

When you cross into the territory of a related plan, reciprocity agreements can keep your pension credits intact. Two systems are common. Under pro rata reciprocity, each plan tracks the credits you earned under it separately and pays you a partial benefit at retirement based on your time in its jurisdiction. Under a “money follows the man” system, your contributions are transferred to a designated home fund that pays your entire pension as if all your work had happened in one place.⁶ The distinction matters because pro rata arrangements can produce a smaller total benefit when each plan’s formula weights total years of service, while money-follows-the-man arrangements preserve the benefit level you would have earned staying put.

Who Is Eligible

Eligibility ties to working for an employer that contributes to the plan under a collective bargaining agreement. In practice, participants are usually union members, though some plans also cover non-union employees of contributing employers. Taft-Hartley plans are most common in industries with mobile, project-based workforces:

Construction
Transportation and trucking
Entertainment and film production
Retail and food service
Manufacturing
Mining
Healthcare and other service sectors

You keep eligibility as long as you remain with a participating employer. If you leave covered work entirely, whether you keep any pension benefit depends on how many years of service you’ve built up.

Vesting

Vesting decides how much of your pension you keep if you leave covered employment before retirement. Federal law sets minimum standards for defined benefit plans: cliff vesting after five years, or a graduated schedule starting at 20 percent after three years and reaching 100 percent after seven.⁷ Many multiemployer plans use five-year cliff vesting because their workforces move around. Once you’re vested, you have a right to a benefit at retirement age even if you never work another covered hour.

Reciprocity can help you vest, too. If you earn three years of credit in one plan and two in a related plan with a reciprocity arrangement, the combined five years may satisfy the vesting requirement in both, even though neither plan alone would have vested you.

How to Tell if Your Plan Is Financially Healthy

Every multiemployer defined benefit pension plan gets an annual financial checkup. The plan’s actuary certifies it into a funding zone, and each zone carries different legal obligations:

Green zone: adequately funded, no corrective action required.
Endangered (yellow zone): funded percentage below 80 percent, or a projected funding deficiency within six years. Trustees must adopt a funding improvement plan.⁸
Seriously endangered: both endangered criteria at once, requiring more aggressive measures.
Critical (red zone): severe underfunding, such as being below 65 percent funded and unable to pay projected benefits and expenses, or facing a funding deficiency within three to four years. Trustees must adopt a rehabilitation plan, which can include benefit reductions for participants not yet retired and contribution increases for employers.⁸
Critical and declining: in critical status and projected to become insolvent within 14 plan years, or 19 years if inactive participants outnumber active ones by more than two to one or the funded percentage is below 80 percent. These plans may apply to the Treasury Department for permission to suspend benefits for current retirees, within strict limits.⁹

You should receive an annual funding notice showing the zone status, funded percentage, and other financial details. For most multiemployer plans, the notice must go out within 120 days after the end of the plan year.¹⁰ Read it. It’s the clearest single signal of whether your future benefits are secure.

What Happens if the Plan Gets Into Trouble

The Pension Benefit Guaranty Corporation insures multiemployer defined benefit pension plans, and each plan pays PBGC a flat-rate premium of $111 per participant for plan years beginning in 2026.¹¹ If a plan becomes insolvent, PBGC provides financial assistance in the form of a loan so the plan can keep paying guaranteed benefits.

The safety net is thinner than most participants expect. The multiemployer guarantee is set by a per-year-of-service formula and is not indexed for inflation, so the ceiling has not moved in years. When a plan goes insolvent, benefits drop to that guaranteed level, which can be a steep cut for longtime participants who earned more.¹² PBGC publishes the current guarantee tables on its site.¹³

A plan in critical and declining status may try to suspend benefits before it runs out of money. Any suspension must keep individual benefits at or above 110 percent of what PBGC would guarantee, cannot reduce disability-based benefits, and cannot apply to anyone who has reached age 80. Before a suspension takes effect, participants must receive individualized notices and can vote on the proposal.¹⁴

The American Rescue Plan Act of 2021 created a separate lifeline. The PBGC-administered Special Financial Assistance program provides an estimated $74 to $91 billion in direct payments to eligible plans that are in critical and declining status or already insolvent. Unlike traditional PBGC assistance, these payments are grants, not loans. Plans that previously suspended benefits can use the funds to reinstate them, and the money is intended to let struggling plans pay full retirement benefits for many years to come.¹⁵

The Legal Backbone

Two federal statutes carry most of the weight. The Labor Management Relations Act of 1947, commonly called the Taft-Hartley Act, made these plans possible. Section 302 generally bars employers from making payments to union representatives but exempts contributions to trust funds established for the sole and exclusive benefit of employees and their families. The same section requires equal labor-management representation on the board of trustees and mandates annual audits.²

The Employee Retirement Income Security Act of 1974 layered on participant protections: minimum funding standards, fiduciary duties, vesting rules, reporting obligations, and PBGC guarantees. The Multiemployer Pension Plan Amendments Act of 1980 added withdrawal liability.¹ The Pension Protection Act of 2006 introduced the zone-status system, and the Multiemployer Pension Reform Act of 2014 added the critical and declining classification along with the benefit suspension rules.

Plans file Form 5500 with the Department of Labor every year, disclosing detailed financial information that includes top employer contributions and employer withdrawals for the year.¹⁶ Those filings are public. If you want to look up your plan’s numbers yourself, the Department of Labor’s online database will get you there.

1
Pension Benefit Guaranty Corporation. Introduction to Multiemployer Plans
2
Office of the Law Revision Counsel. 29 USC 186 – Restrictions on Financial Transactions
3
Office of the Law Revision Counsel. 29 USC 1109 – Liability for Breach of Fiduciary Duty
4
Office of the Law Revision Counsel. 29 USC 1381 – Withdrawal Liability Established
5
Bureau of Labor Statistics. Multiemployer Pension Plans
6
Bureau of Labor Statistics. Portability of Pension Benefits Among Jobs
7
U.S. Department of Labor. FAQs About Retirement Plans and ERISA
8
Office of the Law Revision Counsel. 29 USC 1085 – Additional Funding Rules for Multiemployer Plans
9
IRS. Expanded Zone Status for Actuarial Certifications for Multiemployer Plans
10
eCFR. Annual Funding Notice for Defined Benefit Pension Plans
11
Pension Benefit Guaranty Corporation. Premium Rates
12
Pension Benefit Guaranty Corporation. Establishment of Current Multiemployer Program
13
Pension Benefit Guaranty Corporation. Monthly Maximum Guarantee Amounts
14
Federal Register. Suspension of Benefits Under the Multiemployer Pension Reform Act of 2014
15
Pension Benefit Guaranty Corporation. American Rescue Plan Act of 2021
16
U.S. Department of Labor. Schedule R (Form 5500) Retirement Plan Information