ERISA (US)
The Employee Retirement Income Security Act of 1974, a federal law that sets minimum standards for most voluntarily established retirement and health benefit plans in private industry to protect individuals enrolled in these plans.
- What Is ERISA?
- Types of Plans Covered by ERISA
- ERISA Fiduciary Responsibilities
- ERISA Vesting Rules
- ERISA Reporting and Disclosure Requirements
- The Pension Benefit Guaranty Corporation (PBGC)
- ERISA Claims and Appeals Process
- ERISA Compliance Tips for HR Teams
- ERISA and Employee Benefits Statistics [2026]
- Frequently Asked Questions About ERISA
What Is ERISA?
Key Takeaways
- ✓ERISA establishes minimum standards for pension plans and health benefit plans in private industry, covering fiduciary responsibilities, plan funding, vesting, reporting, and disclosure requirements.
- ✓The law was prompted by the 1963 Studebaker Corporation shutdown, which left 4,000 workers with little or no pension benefits despite decades of service.
- ✓ERISA created the Pension Benefit Guaranty Corporation (PBGC), which insures defined benefit pension plans and currently protects about 31 million workers (PBGC, 2024).
- ✓It doesn't require employers to offer benefit plans. But once an employer does, ERISA dictates how those plans must be managed, funded, and disclosed to participants.
- ✓Church plans, governmental plans, and plans maintained solely to comply with workers' compensation, unemployment, or disability laws are generally exempt from ERISA.
ERISA is the backbone of employee benefit regulation in the United States. Before 1974, employers could establish pension plans with few rules, change benefits at will, and invest pension funds however they chose. Workers had no federal recourse when companies raided pension funds or went bankrupt with underfunded plans. The Studebaker collapse made this painfully clear. When Studebaker shut down its South Bend, Indiana plant in 1963, workers under 60 with fewer than 10 years of service got nothing. Workers with 10+ years got only 15 cents on the dollar. Congress spent 11 years drafting what became ERISA. The law doesn't force any employer to offer a pension or health plan. But the moment an employer does, ERISA kicks in with four main protections: fiduciary standards for plan managers, vesting rules that guarantee workers earn their benefits over time, funding requirements to keep pension plans solvent, and disclosure rules that give participants information about their plans. ERISA also preempts most state laws relating to employee benefit plans, creating a uniform federal regulatory framework. This preemption is both a strength (consistency across states) and a criticism (limiting state-level consumer protections).
Types of Plans Covered by ERISA
ERISA governs two broad categories of employee benefit plans, each with different regulatory requirements.
Retirement plans
Defined benefit plans (traditional pensions) promise a specific monthly benefit at retirement, typically based on salary and years of service. ERISA imposes strict funding requirements and PBGC insurance premiums on these plans. Defined contribution plans (401(k), 403(b), profit-sharing, money purchase) don't promise a specific benefit. Instead, contributions go into individual accounts, and the eventual benefit depends on investment returns. ERISA requires fiduciary management and fee disclosure but not minimum funding. ESOPs (Employee Stock Ownership Plans) are also covered and have additional ERISA rules around diversification and distribution.
Welfare benefit plans
Health insurance (medical, dental, vision), life insurance, disability insurance, and prepaid legal services are all welfare benefit plans under ERISA. Unlike pension plans, welfare benefit plans don't have vesting or funding requirements. However, they're still subject to ERISA's fiduciary standards, reporting and disclosure requirements, and claims procedures. The ACA didn't change ERISA's basic framework for health plans. Instead, it added new requirements on top of ERISA, including essential health benefit mandates, dependent coverage to age 26, and prohibition of preexisting condition exclusions.
ERISA Fiduciary Responsibilities
Anyone who exercises discretionary authority or control over an ERISA plan is a fiduciary. This isn't about job titles. It's about who actually makes decisions.
Who is a fiduciary
Plan administrators, investment committee members, HR directors who select plan options, and anyone who provides investment advice for compensation are all fiduciaries under ERISA. The definition is functional, not formal. A CFO who has no fiduciary title but who selects the 401(k) fund lineup is a fiduciary. A benefits broker who recommends specific insurance carriers is a fiduciary. Third-party administrators (TPAs) and investment advisors can also be fiduciaries depending on their contractual authority.
Core fiduciary duties
Duty of loyalty: act solely in the interest of plan participants and beneficiaries. Not the company. Not the shareholders. The participants. Duty of prudence: act with the care, skill, prudence, and diligence that a prudent person acting in a like capacity would use. This is judged by the process, not the outcome. A fiduciary who follows a disciplined investment selection process isn't liable for market losses. Duty to diversify: minimize the risk of large losses unless it's clearly prudent not to diversify (e.g., an ESOP that by design holds employer stock). Duty to follow plan documents: administer the plan in accordance with the plan documents and instruments, to the extent they're consistent with ERISA.
Prohibited transactions
ERISA Section 406 prohibits specific transactions between the plan and "parties in interest" (the employer, fiduciaries, service providers, unions). A company can't borrow from its pension fund. A fiduciary can't receive compensation from a mutual fund company for selecting that company's funds. Plan assets can't be used for the employer's benefit. Violations of prohibited transaction rules can result in excise taxes of 15% of the amount involved (per year the transaction remains uncorrected), increasing to 100% if not corrected within the taxable period.
ERISA Vesting Rules
Vesting determines when an employee's right to employer contributions becomes non-forfeitable. Employee contributions always vest immediately.
| Vesting Schedule | How It Works | Typical Use |
|---|---|---|
| 3-year cliff vesting | 0% vested until 3 years of service, then 100% vested | Defined benefit plans, some 401(k) matches |
| 2-to-6-year graded vesting | 20% after 2 years, increasing 20% per year until 100% at 6 years | Defined benefit plans |
| Immediate vesting | 100% vested from day one | Safe harbor 401(k) plans, profit-sharing plans (by employer choice) |
| 1-to-3-year graded vesting (EGTRRA) | 33.3% after 1 year, 66.7% after 2 years, 100% after 3 years | Employer matching contributions in defined contribution plans |
ERISA Reporting and Disclosure Requirements
ERISA requires plan administrators to provide specific information to participants and file reports with the federal government.
Participant disclosures
Summary Plan Description (SPD): a plain-language document describing plan benefits, participant rights, how the plan works, and how to file a claim. Must be provided within 90 days of becoming a participant. Summary of Material Modifications (SMM): describes any changes to the plan, due within 210 days after the plan year in which the change was adopted. Summary Annual Report (SAR): a condensed version of the annual financial report, due within 9 months of the plan year end (or 2 months after the Form 5500 filing deadline). Benefit statements: 401(k) plans must provide quarterly statements; defined benefit plans must provide annual statements.
Government filings
Form 5500: the annual return/report filed with the DOL. Plans with 100+ participants require an audit by an independent qualified public accountant. The filing deadline is 7 months after the plan year end, with a 2.5-month extension available. Small plans (under 100 participants) file Form 5500-SF. PBGC premiums: defined benefit plans pay annual premiums to the PBGC. The flat rate premium for single-employer plans was $96 per participant in 2024. Underfunded plans pay additional variable-rate premiums. Failure to file Form 5500 on time can result in penalties of $250 per day, up to $150,000 per year (DOL) and $250 per day with no cap (IRS).
The Pension Benefit Guaranty Corporation (PBGC)
ERISA created the PBGC as a federal corporation to insure defined benefit pension plans. It's funded by premiums paid by covered plans, not by taxpayer dollars.
How PBGC insurance works
When a defined benefit plan can't pay promised benefits, the PBGC steps in as trustee and pays benefits up to a legal maximum. For single-employer plans terminating in 2024, the maximum guarantee is $7,107.95 per month ($85,295.40 per year) for a worker retiring at age 65. Benefits earned within the 5 years before plan termination are phased in. The PBGC currently protects about 31 million workers and retirees in approximately 24,000 single-employer plans and about 10.9 million in 1,360 multiemployer plans.
Distress and involuntary terminations
A plan sponsor can voluntarily terminate an underfunded plan (distress termination) only if the employer meets strict criteria: liquidation in bankruptcy, reorganization in bankruptcy with court approval, inability to continue in business unless the plan terminates, or unreasonably burdensome pension costs due to declining workforce. The PBGC can also initiate an involuntary termination if the plan can't pay current benefits, the plan hasn't met minimum funding standards, or the long-run loss to the PBGC will increase unreasonably if the plan continues.
ERISA Claims and Appeals Process
ERISA mandates a formal process for benefit claims and appeals. Participants must exhaust administrative remedies before suing in federal court.
Initial claim decision timelines
Health plan claims: urgent care claims must be decided within 72 hours, pre-service claims within 15 days, and post-service claims within 30 days. Disability claims must be decided within 45 days, with two 30-day extensions allowed. Pension claims must be decided within 90 days, with a 90-day extension. If a claim is denied, the plan must provide a written explanation including the specific reason for denial, the plan provision on which it's based, and information on how to appeal.
Appeals and litigation
Participants generally have 180 days to appeal a denied claim. The appeal must be reviewed by someone different from the initial decision-maker. For disability claims, the 2018 DOL regulations added new procedural protections: plans must provide the claimant with any new evidence or rationale before issuing the appeal decision. If the appeal is denied, the participant can file suit in federal court under ERISA Section 502(a). The standard of review depends on plan language: if the plan gives the administrator discretionary authority, courts apply the deferential "arbitrary and capricious" standard. Otherwise, they review the decision "de novo" (from scratch).
ERISA Compliance Tips for HR Teams
ERISA violations can result in personal liability for fiduciaries, excise taxes, DOL investigations, and costly litigation. These practices help minimize exposure.
- Maintain a fiduciary governance calendar with deadlines for Form 5500 filing, PBGC premiums, participant disclosures, fee benchmarking, and investment reviews.
- Document every fiduciary decision. Minutes from investment committee meetings, fund selection rationale, fee comparisons, and advisor recommendations should all be in writing. Process matters more than outcomes.
- Benchmark plan fees at least every 3 years. The DOL has made excessive fee litigation a priority. Compare your plan's total cost (investment fees, recordkeeping, advisory fees) against similar-sized plans.
- Distribute Summary Plan Descriptions within 90 days of an employee becoming a participant, and issue Summary of Material Modifications within 210 days of plan changes. Track distribution dates.
- Don't commingle plan assets with company assets. This includes timely remittance of employee 401(k) deferrals, which the DOL considers plan assets as soon as they can reasonably be segregated from general company funds (typically within a few business days of payroll).
- Consider fiduciary liability insurance (ERISA bonds are required but cover theft, not fiduciary breaches). ERISA Section 412 requires a fidelity bond of at least 10% of plan assets handled, up to $500,000 ($1M for plans holding employer securities).
ERISA and Employee Benefits Statistics [2026]
Key data points reflecting the scope and impact of ERISA-regulated benefit plans in the US.
Frequently Asked Questions
Does ERISA apply to all employers?
Are health insurance plans covered by ERISA?
What happens if my employer goes bankrupt and the pension is underfunded?
Can I sue my employer for ERISA violations?
How does ERISA interact with the ACA?
What's the penalty for late Form 5500 filing?
Written by Adithyan RK