Employee Benefits Law: Health Insurance, Retirement Plans, and What Employers Must Provide

The Legal Framework Governing Employee Benefits

Employee benefits—compensation provided to workers beyond wages, such as health insurance, retirement plans, paid leave, and disability coverage—are governed by a complex web of federal and state laws. Understanding which benefits employers are legally required to provide, which are voluntary, and what rights workers have when benefits are mismanaged or denied is essential for every worker and employer. The legal landscape has evolved substantially over the past several decades, shaped by landmark legislation, Supreme Court decisions, and shifting federal agency interpretations.

The cornerstone of federal employee benefits law is the Employee Retirement Income Security Act of 1974 (ERISA). ERISA is a sweeping federal statute that sets minimum standards for most voluntarily established retirement and health plans in private industry. It does not generally require employers to establish any particular benefit plan; instead, it regulates how plans that do exist must be managed, communicated, and funded. ERISA's reach is broad, covering most private-sector employers, and its preemption of state laws relating to employee benefit plans—with limited exceptions—creates a largely uniform federal framework.

Beyond ERISA, a host of other federal laws shape the benefits landscape. The Affordable Care Act (ACA) introduced requirements for employers with 50 or more full-time employees to offer affordable health coverage. The Consolidated Omnibus Budget Reconciliation Act (COBRA) gives workers who lose job-based health coverage the right to continue that coverage for a period by paying the full premium. The Family and Medical Leave Act (FMLA) requires certain employers to provide unpaid leave and the continuation of health benefits during qualifying absences. Together, these laws create a layered system of rights and responsibilities.

Health Insurance: What Employers Are Required to Provide

The Affordable Care Act's employer mandate—officially the employer shared responsibility provisions—requires "applicable large employers" (ALEs), defined as employers with 50 or more full-time equivalent employees, to offer minimum essential health coverage to their full-time employees and their dependents. The coverage must be "affordable" and provide "minimum value." Coverage is considered affordable if the employee's share of the premium for self-only coverage does not exceed a specified percentage of household income (adjusted annually). Coverage provides minimum value if the plan pays for at least 60 percent of covered health care costs on average.

ALEs that fail to comply with these requirements face potential excise tax penalties known as the employer shared responsibility payment. There are two types of penalties: employers that fail to offer coverage to substantially all full-time employees (the so-called "A penalty") and employers that offer coverage that is unaffordable or fails to provide minimum value (the "B penalty"). While these penalties can be substantial, the ACA mandate does not technically require employers to offer health coverage—it simply imposes a financial consequence for failing to do so. For employers with fewer than 50 full-time equivalent employees, there is no federal mandate to offer health insurance, though small employers may qualify for tax credits if they do offer coverage.

Even when employers are not required by the ACA to provide health coverage, ERISA still governs the plans they voluntarily establish. ERISA requires plan administrators to provide participants with a summary plan description (SPD)—a document that explains in plain language what the plan covers, how it works, and participants' rights. ERISA also establishes claims and appeals procedures that plans must follow when participants seek benefits, and it gives participants the right to sue for benefits wrongfully denied. Understanding your plan's SPD is the first step toward knowing what you are entitled to and how to pursue it if you are denied.

COBRA: Continuing Health Coverage After Job Loss

The Consolidated Omnibus Budget Reconciliation Act gives workers and their families who lose health coverage due to certain qualifying events the right to continue their group health plan coverage for a limited period. Qualifying events include job loss (for reasons other than gross misconduct), reduction in hours that causes loss of coverage, divorce or legal separation from a covered employee, the employee's death, and a child losing dependent status under the plan. COBRA applies to employers with 20 or more employees that offer group health plans.

When a qualifying event occurs, eligible individuals can elect COBRA continuation coverage, typically within 60 days of the qualifying event or of receiving the COBRA election notice. COBRA coverage is identical to the coverage the employee had before the qualifying event—the plan cannot limit benefits for COBRA participants. The major drawback is cost: COBRA participants pay the full premium (both the employee share and the employer share that was previously paid by the company) plus a two percent administrative fee. This can be very expensive, particularly for workers who have recently lost their jobs.

COBRA coverage typically lasts 18 months for job loss or hour reduction, and up to 36 months for other qualifying events such as divorce or a dependent child aging off the plan. Workers should be aware that they can elect COBRA and then drop it later without penalty if they find other coverage, and that they may be able to use a special enrollment period to join a spouse's plan or enroll in ACA marketplace coverage when they lose job-based coverage. Comparing the cost of COBRA with other options is advisable before making an election.

Retirement Plans: ERISA Protections and Employer Obligations

ERISA imposes comprehensive requirements on employer-sponsored retirement plans, including 401(k) plans, pension plans, and profit-sharing arrangements. These requirements are designed to protect workers from plan mismanagement and ensure that promised benefits are actually delivered. The key protections include minimum participation and vesting standards, funding requirements for defined benefit (traditional pension) plans, fiduciary duty rules governing how plan assets must be managed, and disclosure requirements designed to keep participants informed.

Vesting rules are among ERISA's most important protections. Vesting refers to the process by which employees earn a non-forfeitable right to employer contributions to their retirement accounts. For defined contribution plans like 401(k)s, ERISA sets minimum vesting schedules: employers must use either a "cliff" schedule (full vesting after no more than three years of service) or a "graded" schedule (20 percent vesting after two years, increasing by 20 percent per year until 100 percent vesting after six years). Employees' own contributions are always 100 percent vested immediately. Workers who leave a job before being fully vested may forfeit the unvested portion of their employer's contributions.

ERISA's fiduciary rules require plan administrators, trustees, and investment managers to act solely in the interest of plan participants and their beneficiaries, to act with the care, skill, prudence, and diligence of a prudent expert, and to diversify plan investments. Violations of these fiduciary duties can result in personal liability for plan losses, disgorgement of profits, and other equitable relief. Workers who believe their plan has been mismanaged—for example, by charging excessive fees or investing in imprudent assets—can file a complaint with the Department of Labor or bring a civil lawsuit under ERISA.

Family and Medical Leave: Health Benefits During Leave

The Family and Medical Leave Act requires covered employers (those with 50 or more employees) to provide eligible employees up to 12 weeks of unpaid, job-protected leave per year for certain family and medical reasons, including the birth or adoption of a child, a serious health condition of the employee or a close family member, and certain military family needs. During FMLA leave, employers must maintain the employee's group health insurance coverage under the same terms as if the employee had continued working. The employee is generally responsible for paying their share of the premium during leave.

Importantly, FMLA leave does not automatically entitle workers to paid leave; it guarantees only job-protected unpaid leave and continuation of health benefits. However, many states have enacted their own family and medical leave laws that provide for partial wage replacement through state insurance funds. California, New Jersey, New York, Washington, Massachusetts, and several other states have paid family leave programs funded through payroll contributions that allow workers to receive a portion of their wages while on qualifying leave.

Workers who are denied FMLA leave, who are retaliated against for taking it, or whose health benefits are not maintained during leave have the right to file a complaint with the U.S. Department of Labor's Wage and Hour Division or to bring a private lawsuit. Remedies include back pay, compensation for actual monetary losses such as out-of-pocket medical expenses, reinstatement, and attorney's fees. Given the complexity of FMLA rules—including eligibility requirements, notice obligations, and the interplay between FMLA and other leave laws—workers and employers alike benefit from understanding the rules before a leave situation arises.

Other Legally Required Benefits

Beyond health insurance and retirement benefits, several other benefits are required by federal or state law. Social Security and Medicare taxes are mandatory for most employees: employers must withhold the employee's share of FICA taxes from wages and match that amount with an equal employer contribution. Workers' compensation insurance is required by state law in virtually every state; it provides medical care and wage replacement benefits to workers who suffer job-related injuries or illnesses, and employers are generally required to carry workers' compensation coverage or to self-insure.

Unemployment insurance is a jointly administered federal-state program that provides temporary income replacement to workers who lose their jobs through no fault of their own. Employers pay unemployment insurance taxes to fund the system. Although unemployment benefits are administered and paid by state agencies, federal law establishes minimum standards for the program. Workers who are laid off, and in some cases workers who leave for good cause or are fired under certain circumstances, may be eligible to receive unemployment benefits while they search for new work.

Some states and localities require additional benefits beyond these federal minimums. Many jurisdictions have enacted paid sick leave laws that require employers to provide a specified number of paid sick days per year. San Francisco was among the first cities to adopt such a law, and the concept has since spread to many states and cities. A smaller number of jurisdictions require employers to provide paid vacation or bereavement leave. Workers should consult their state and local labor laws to understand all the benefits to which they may be entitled, as the patchwork of state and local requirements has grown significantly in recent years.

When Benefits Are Denied: Your Rights and Remedies

Workers who are wrongfully denied benefits have meaningful legal remedies available to them. Under ERISA, a participant whose claim for benefits is denied has the right to a full and fair review of that denial. The plan must provide a written notice of the denial within specified timeframes, explaining the specific reason for the denial and the plan provisions relied upon, and describing the steps the claimant can take to appeal. The claimant must then exhaust the plan's internal appeals process before filing a lawsuit. Plans must decide appeals within specified timeframes, and failure to comply with these procedural requirements can be grounds for relief.

If internal appeals are unsuccessful, participants may file a lawsuit in federal court under ERISA Section 502(a). Courts review benefit denials under a standard that depends on whether the plan grants the administrator discretionary authority to interpret plan terms and determine eligibility—if so, courts apply a deferential "abuse of discretion" standard rather than reviewing the decision de novo. This means that the wording of your plan documents matters enormously, and workers pursuing benefit denial claims should have an ERISA attorney review both the plan documents and the administrative record carefully.

Workers who believe their employer has violated other benefits laws—such as COBRA, FMLA, or the ACA—should act promptly given the statute of limitations that applies to their specific claim. The Department of Labor, the IRS, and the Department of Health and Human Services all have jurisdiction over different aspects of benefits law, and complaints to these agencies can result in investigations, corrective action orders, and penalties against non-compliant employers. For workers who have suffered significant financial harm from benefits violations, consulting with an attorney who specializes in ERISA and employee benefits law is strongly advisable.