Special Enrollment Windows and Effective Dates
The statute sets a 30-day floor for most special enrollment requests and a 60-day period for Medicaid and CHIP events. This page lines up each window with the date coverage must start, and says what we could not confirm.
The Clock and the Calendar.
General information, not legal advice. Read the overview first, then the two event pages that feed this one.
HIPAA Special Enrollment and the Newborns’ Act
The overview of this series, with all five topics, the sources and a first-steps list.
Special Enrollment After Loss of Other Coverage
Which losses of other coverage open a special enrollment right, and which do not.
Special Enrollment for Marriage, Birth, and Adoption
New spouses, newborns and adopted children, and when their coverage starts.
Thirty Days Means at Least Thirty.
For loss of other coverage, ERISA section 701(f)(1), 29 U.S.C. 1181(f)(1), says the plan terms must require the request within 30 days after the other coverage is exhausted, ends, or loses employer contributions. The regulation, 29 CFR 2590.701-6, phrases it as a minimum: the plan must allow at least 30 days.
For a new dependent, section 701(f)(2) uses the words “not less than 30 days.” The period starts on the later of the date dependent coverage became available or the date of the marriage, birth, adoption or placement.
A plan may therefore choose 31, 45 or 60 days. It may not choose 15. If your plan document or your enrollment portal says 14 or 21 days, it is out of line with the federal floor and should be fixed.
The 60-Day Pointer.
Section 701(f)(3) adds two Medicaid and Children’s Health Insurance Program events. Each carries a request period of 60 days. The first is when Medicaid or CHIP coverage ends because of lost eligibility, measured from the end of that coverage. The second is when an employee or dependent becomes eligible for premium assistance under Medicaid or CHIP, measured from the eligibility determination.
This page treats the topic as a pointer only. We did not confirm the effective date for these two events, the model notice language or how the state premium assistance lists work, so check the statute and the Department of Labor before you rely on this summary.
Employers in states that offer premium assistance have a notice duty under the same subsection. The statute says the Secretaries were to develop model notices, which an employer may send with eligibility materials, open enrollment materials or the summary plan description.
The Start Date by Event.
Loss of other coverage: no later than the first day of the first calendar month after the plan receives the request (29 CFR 2590.701-6(a)). Marriage: no later than the first day of the next month after a completed request. Birth: the date of birth. Adoption or placement: the date of the adoption or placement.
The regulation’s late-enrollment example shows why this matters. An employee loses coverage on October 18 and asks on November 2. The employee is a special enrollee, so coverage must start by December 1, and not on the plan’s January 1 date for late enrollees.
A plan that enrolls these employees on the next January 1 is applying the wrong rule. Note that the regulation says someone who requests enrollment while eligible for special enrollment is a special enrollee even if the request falls in a late-enrollment window.
Day Counting and Plan Terms.
The sources we fetched do not say how a plan must count the 30 days, for example whether the day of the event is day one. We could not confirm one counting convention, so the plan document should state it plainly and the HR team should apply it the same way each time.
Put the window length, the counting rule and the start dates in one table in your enrollment guide. A request that arrives on day 29 should never turn on a reading of an unclear sentence.
Pre-tax payroll changes follow a separate test under the cafeteria plan rules. Our page on Section 125 election rules covers it.
Related Rules and Tools.
Section 125 Cafeteria Plans: Written Plan and Election Rules
How pre-tax election changes work, which is a separate test from special enrollment.
A Compliance Calendar for Your Plan
A plan-year view of the filings, notices and deadlines an employer plan carries.
Special Enrollment and Health Factor Nondiscrimination Checklist
A checklist that pairs special enrollment with the health factor rules.
Laws and Sources
ERISA section 701(f), 29 U.S.C. 1181(f): special enrollment periods for loss of other coverage, new dependents, and Medicaid and CHIP.
29 CFR 2590.701-6: the regulation on special enrollment periods, notice and effective dates.
General information, not legal or tax advice.
Quick Answers.
Short replies on this page’s topic, each tied to a fuller guide.
Can our plan give employees only 14 days to ask for special enrollment?
No. For loss of other coverage and for new dependents, the plan must allow at least 30 days. A longer window is allowed.
How long is the special enrollment period for Medicaid or CHIP events?
The statute uses a 60-day request period for loss of Medicaid or CHIP coverage and for becoming eligible for premium assistance. We did not confirm the effective date, so verify it before you rely on this summary.
Can we make a special enrollee wait for the next January 1 effective date?
A person who qualifies for special enrollment is a special enrollee, not a late enrollee. Under the regulation’s example, a November 2 request after an October 18 loss means coverage by December 1.
The Rest of This Series.
Newborns’ Act 48 and 96 Hour Hospital Stay Rules
The childbirth stay minimums, the cost-sharing limit and the no-authorization rule.
Special Enrollment and Newborns’ Act Notices
The notice at the time of offer, the hospital-stay statement and the plan document terms.
An independent employee benefits consulting firm. We look at the entire benefits program — cost, plan performance, risk and administration.
Switch to CFH. Unhappy with your broker? Your employees won’t notice. You will. →
Cookies on This Site
We use cookies to keep the site working properly and to understand how it is used. You can decline anything that is not essential. See our Privacy Policy for the detail.
- Essential — needed for the site to load and for you to move around it. These cannot be switched off.
- Analytics — tell us which pages get read, so we know what is worth writing more of.
- Advertising — set by third parties such as ad and social platforms to measure and target campaigns.

