ERISA Explained: Employee Benefits Law and Fiduciary Duty

The 1974 Law That Still Governs Your 401(k)

The Employee Retirement Income Security Act of 1974 (ERISA) was signed by President Gerald Ford on September 2, 1974 — Labor Day — after the 1963 collapse of Studebaker's pension plan left 4,000 workers with drastically reduced or eliminated retirement benefits despite years of contributions. ERISA established federal minimum standards for most voluntarily established retirement and health benefit plans in private industry. It does not require employers to offer benefit plans, but when they do, ERISA sets the rules. Today ERISA covers approximately 2.5 million retirement plans and 2.5 million health and welfare plans covering roughly 141 million workers and dependents.

ERISA's Core Coverage and Exclusions

ERISA applies to employee benefit plans maintained by private sector employers engaged in interstate commerce. It does not apply to government employer plans (federal, state, local), church plans (unless they elect into ERISA coverage), or plans maintained outside the United States primarily for nonresident aliens.

• Pension plans (defined benefit and defined contribution, including 401(k), 403(b), profit-sharing): covered by ERISA's participation, vesting, funding, and fiduciary rules
• Welfare benefit plans (health, disability, life insurance, flexible spending accounts): covered by ERISA's reporting, disclosure, and fiduciary rules — but not funding or vesting requirements
• Individual IRAs: generally not ERISA plans unless established or maintained by an employer

Fiduciary Duty: The Centerpiece of ERISA

ERISA imposes a strict fiduciary standard on anyone who exercises discretionary authority or control over plan management or assets. Fiduciaries must act solely in the interest of plan participants and beneficiaries — the "exclusive benefit rule."

The duties are demanding. Fiduciaries must act prudently (the "prudent expert" standard — not just a reasonable person, but a knowledgeable investment professional), diversify plan investments to minimize risk of large losses, follow plan documents to the extent they comply with ERISA, and pay only reasonable plan expenses. Fiduciaries are personally liable for breaches. The Department of Labor (DOL) has authority to bring civil actions and assess civil penalties.

ERISA also prohibits specific transactions between a plan and "parties in interest" (employers, fiduciaries, service providers) unless an exemption applies. These prohibited transaction rules prevent self-dealing.

Vesting Schedules

ERISA requires that participants become vested — gain nonforfeitable rights to their employer contributions — within specified time limits. Employee salary deferrals (such as 401(k) contributions) are always 100% immediately vested. Employer contributions are subject to vesting schedules.

Defined benefit plans have different (generally slower) minimum vesting schedules. A plan may always provide faster vesting than ERISA minimums. Plan documents must specify the vesting schedule, and participants must receive a vesting statement upon request or upon separation from service.

The PBGC: Insurance for Defined Benefit Plans

The Pension Benefit Guaranty Corporation (PBGC) is a federal government agency created by ERISA to insure defined benefit pension plans. When a covered DB plan terminates with insufficient assets, PBGC assumes the plan's obligations up to statutory limits.

PBGC coverage does not apply to defined contribution plans like 401(k)s. Those accounts belong to individual participants and are not insured — though they are protected from employer insolvency because plan assets must be held in a trust separate from the employer's general assets.

Summary Plan Description Requirements

ERISA requires plan administrators to provide participants with a Summary Plan Description (SPD) written in plain language. The SPD must describe the plan's benefits, eligibility requirements, claims procedures, and participants' rights. Requirements include:

• Initial SPD must be furnished within 90 days of becoming a participant (120 days for new plans)
• Updated SPD must be provided every 5 years if material modifications were made, every 10 years otherwise
• Summary of Material Modifications (SMM) must be provided within 210 days after the plan year in which material changes are adopted
• Penalties for failure to provide SPD: up to $110/day per request after 30-day delay

ERISA Preemption: Federal Law Wins

One of ERISA's most significant features is its broad preemption provision. ERISA preempts all state laws that "relate to" employee benefit plans. This means state-level benefit mandates, state contract claims about benefits, and state insurance laws generally cannot expand or modify ERISA plan terms. Participants who are wrongly denied benefits must sue under ERISA's own civil enforcement section — they cannot recover extracontractual damages (emotional distress, punitive damages) available under state law. The Supreme Court has interpreted this preemption expansively, which critics argue limits remedies for plan participants but defenders say ensures national uniformity for multistate employers.

This article is for informational purposes only and does not constitute legal advice.