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Benefits When an Employee Leaves

Separation doesn't end the benefits work — it starts it: COBRA clocks, coverage end-dates, FSA forfeitures, HSA portability, 401(k) rights, and the notices that must go out while the termination itself is still fresh.

LegalWorkplace.com Staff Reviewed Sep 2026 · 9 min read · 8 steps
Benefits When an Employee Leaves
The first question
The plan document sets the coverage end-date — last day worked or end of that month — and every downstream clock starts there.
The FSA/HSA split
FSA money is the plan's at separation (spend by the end-date, or elect FSA-COBRA); HSA money is the employee's, forever.
The quiet deadline
Group life insurance usually carries a 31-day conversion window — missable, irreversible, and the employer's notice failure to defend.
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Not legal advice. Educational guide to general U.S. employment law. Rules vary by state — consult an employment attorney for specific cases.
01

Health coverage and COBRA

Every benefits exit starts with one lookup: what does the plan document say coverage ends? Last day worked and last day of the month are both common; the answer drives everything downstream — the COBRA chain (event reported within 30 days, election notice within 14, the beneficiary's 60-day window), the employee's 60-day marketplace special-enrollment period, and the severance negotiation if there is one. The clean employer move is a single written statement in the exit packet: coverage end-date, COBRA rights and cost, and the marketplace alternative — because an employee who understands the marketplace option often chooses it over COBRA, saving both parties money and administration.

02

FSAs, HSAs, and HRAs

The accounts diverge completely. Health FSA: plan money — claims incurred through the coverage end-date are payable (submitted within the run-out period); the rest forfeits unless the employee elects FSA-COBRA, rational only when the balance left exceeds the premiums left. An employee who spent ahead of contributions owes nothing back — the uniform-coverage rule cuts both ways. HSA: the employee's property, full stop — employer contributions included, portable forever; your only tasks are stopping payroll contributions and pointing them to IRS Publication 969 for what happens next. HRA: whatever the plan document says — typically access ends at separation, subject to COBRA rights in the account's value.

03

Retirement accounts

At separation the employee keeps their own 401(k) contributions and whatever employer money has vested under the plan's schedule; the rest forfeits to the plan. The employer's obligations are procedural: a timely statement of vested balance, the distribution options (leave it, roll it over, cash out with taxes and possible penalties), and the rollover-notice paperwork the plan administrator generates. Two cautions: forced cash-outs are limited to small balances under the plan's thresholds, and never advise — the line between explaining options and recommending one is where fiduciary problems start. Outstanding 401(k) loans deserve a specific mention in the exit meeting: they typically come due or convert to taxable distributions on a schedule the employee won't know until it's expensive.

04

Life, disability, and the exit packet

Group life and disability coverage usually end at separation — with conversion or portability rights exercisable within roughly 31 days, a deadline that is invisible, irreversible, and litigated when an uninsurable former employee's family discovers it lapsed unnotified. Put the conversion notice in writing, dated. Assemble the whole exit packet in one pass: benefits end-dates and rights (this guide), the final paycheck on the state's deadline with any required PTO payout, the severance agreement where one is offered, and the state-specific separation notices several states require. Offboarding is a checklist precisely because every item is easy and every omission compounds — build it once, run it every time.

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Frequently asked questions

When does health insurance end after termination?
Whatever the plan document says — commonly the last day of the month of termination, sometimes the last day worked. Check the document, not habit: paying claims for someone whose coverage lapsed, or cutting off someone still covered, both create real liability. The end-date drives the COBRA offer and the employee's marketplace special-enrollment window.
Does an employee lose their FSA money when they leave?
Generally yes — health FSA funds are forfeited except for claims incurred before the coverage end-date (submitted within the plan's run-out period), unless the employee elects COBRA for the FSA, which makes sense only when the remaining balance exceeds the remaining premiums. HSAs are the opposite: the employee's money, fully portable, regardless of who contributed.
What happens to a 401(k) at separation?
The employee keeps all their own contributions plus vested employer money; unvested amounts forfeit per the plan's schedule. They can usually leave the balance (if above the plan's small-balance threshold), roll it to an IRA or new employer's plan, or take a taxable distribution. The employer's job is timely notice of options — not advice.
Do severance packages continue benefits?
Only as negotiated — a common structure is employer-paid COBRA premiums for a set number of months, written into the severance agreement. Promising 'continued benefits' loosely creates plan-document conflicts; pay the COBRA premium, don't improvise coverage.
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