Last reviewed: 7 October 2026

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Special enrollment in an employer health plan: the 30-day rights federal law gives you when you lose other coverage or add a family member

The short answer: federal law (29 U.S.C. 1181(f), implemented at 29 CFR 2590.701-6) requires an employer group health plan to let an eligible employee or dependent who declined coverage enroll outside the plan's regular enrollment period in specific situations: loss of other coverage, an end to employer contributions toward it, exhaustion of COBRA, or a new dependent through marriage, birth, adoption or placement for adoption.^[1][2] The plan must allow at least 30 days to ask, and the regulation sets the latest date coverage may begin.^[2] This page reads those two sources. It is separate from the HealthCare.gov Marketplace special enrollment periods, and it does not say whether to enroll.

The short version

• The right applies "without regard to the dates on which an individual would otherwise be able to enroll under the plan."^[2]
• For the loss-of-coverage right, you generally need to have had other group health plan or health insurance coverage when coverage under this plan was previously offered to you.^[1][2]
• Loss of coverage counts only if the other coverage ended because you lost eligibility or employer contributions stopped, or if COBRA was exhausted. The regulation says loss of eligibility does not include failure to pay premiums on time or termination for cause.^[1][2]
• Loss of Medicaid or CHIP eligibility, or becoming eligible for premium assistance under those programs toward the group plan, carries a separate 60-day window in the statute.^[1]
• Your window to ask is at least 30 days after the event.^[2]
• The plan must give you a notice of special enrollment at or before the time you are first offered the chance to enroll.^[2]

Events, deadlines and start dates

If dependent coverage is not generally available when the marriage, birth or adoption happens, the 30 days run from the date the plan makes it available.^[2]

Losing other coverage

• The statute's conditions: you or your dependent was covered under a group health plan or had health insurance coverage when coverage was previously offered; if the plan required it and gave you notice, you stated in writing that the other coverage was your reason for declining; the other coverage was either COBRA coverage that was exhausted, or coverage that ended because of loss of eligibility (including legal separation, divorce, death, termination of employment or reduced hours) or because employer contributions ended; and you ask within 30 days.^[1]
• The regulation's list of loss of eligibility includes, among other things: legal separation, divorce, a dependent reaching the maximum age, death of the employee, termination of employment, reduction in hours, loss of coverage because you no longer live or work in an HMO's service area (with a condition for group coverage), and a plan that no longer offers benefits to your class of similarly situated individuals. It says the list is not limited to those.^[2]
• If a plan requires a written statement of the reason for declining, it must have told you of that requirement and its consequences at or before you declined. The regulation says the plan cannot require more than a written statement; for example, it cannot require that the statement be notarized.^[2]
• If your loss of coverage was of COBRA coverage, the right arises when COBRA is exhausted. The regulation says someone who qualified earlier, did not enroll, and instead elected and exhausted COBRA also satisfies the condition.^[2]

Adding a new dependent

• If a plan makes dependent coverage available and a person becomes your dependent through marriage, birth, or adoption or placement for adoption, the plan must provide a dependent special enrollment period of not less than 30 days, starting on the later of the date dependent coverage is made available or the date of the event.^[1]
• The regulation lists who may enroll, depending on the event. In the case of a birth or adoption, the employee's spouse may also be enrolled if otherwise eligible.^[1][2]
• A person who requests enrollment while entitled to special enrollment is a special enrollee and cannot be treated as a late enrollee, even if the request coincides with a late enrollment opportunity.^[2]
• Special enrollees must be offered all the benefit packages available to similarly situated individuals who enroll when first eligible, and cannot be required to pay more for coverage than such an individual.^[2]

Medicaid and CHIP

The statute adds two more situations: your or your dependent's Medicaid or Children's Health Insurance Program coverage ends because of loss of eligibility, or you become eligible for premium assistance under those programs toward the group plan. In each case you must ask within 60 days.^[1] Section 2590.701-6 does not address these two cases; the 60-day rights are in 29 U.S.C. 1181(f)(3).^[2]

How to verify this yourself

Read 29 U.S.C. 1181(f) and 29 CFR 2590.701-6, then find the special enrollment notice in your own plan's enrollment materials.

What this page does not cover

We do not cover Marketplace special enrollment periods, state-law continuation rights, plan types or sponsors with their own rules, whether a particular plan is a covered group health plan, or whether to enroll in any plan. This page covers the Labor Department's version of the rule (29 CFR part 2590); parallel rules for other plan types are not covered here. This is general information, not insurance, tax or legal advice. For your own situation, ask your agent or insurer, or contact your state or provincial insurance regulator.

Your next step

A plan administrator can say how to request special enrollment and by when. The regulation's model notice says the period is 30 days or any longer period the plan allows.

Related checks

Our standard explains how we check an agent's license and disciplinary history. Check an agent reports our findings at category level, as a method and not a verdict. Neither reviews any insurer, plan or product. For the Marketplace version, see ACA open and special enrollment. For what happens after a job ends, see COBRA continuation coverage. More plain-language guides are in the agent guides.

When we will update this page

We re-read the sources when they change. If something here is out of date, tell us. Corrections are dated on the page.

References

1. [1] Cornell Law School Legal Information Institute, text of 29 U.S.C. § 1181(f) (special enrollment periods), read 7 October 2026 — law.cornell.edu/uscode/text/29/1181
2. [2] Electronic Code of Federal Regulations, 29 CFR § 2590.701-6 (special enrollment periods), read 7 October 2026 — ecfr.gov/current/title-29/section-2590.701-6