What the rule caps
Federal law prohibits a group health plan from applying a waiting period longer than 90 days to an employee who is otherwise eligible for coverage. The count is in calendar days, including weekends and holidays.
Start work on January 10 and coverage must begin no later than April 9. Not May 1, even if May 1 is when the payroll cycle would prefer it.
The rule reaches all group health plans regardless of size or funding, which makes it one of the few protections that applies identically to a self-funded plan at a large employer and a fully insured plan at a small one.
The two things that extend it lawfully
An orientation period. A plan may run a bona fide orientation period before the waiting period begins, but it may not exceed one month, and the 90 days start the day after it ends. So the worst lawful case is roughly one month plus 90 days.
A cumulative hours requirement. If eligibility depends on working a number of hours rather than a number of days, the requirement may not exceed 1,200 cumulative hours. This is the rule that matters for part-time, variable-hour and per-diem work, where “90 days” is not a meaningful measure.
Neither is a loophole for indefinite delay. Both are bounded, and the bounds are the numbers above.
Covering the gap
The gap is the point of this page. Between the last day of old coverage and the first day of new coverage, a hospital visit belongs entirely to you.
Do not cancel old coverage early. The most common self-inflicted injury here is ending a marketplace plan on the start date of the new job rather than on the start date of the new coverage. Cancel for the last day of the month in which the employer plan actually begins, and accept one overlapping month rather than one uncovered one.
COBRA, if the previous job had a plan. It can be elected retroactively inside the 60-day election window, which makes it a genuine safety net: wait, and elect only if something happens. How the retroactivity works.
The Essential Plan or Medicaid, if the gap is between jobs with no income in it. Both take applications in any month and neither needs a qualifying event. If the new salary will later put you over the line, gaining employer coverage is a change you report and the enrollment ends cleanly. The five-question check.
A marketplace plan using a special enrollment period, if you lost coverage when the previous job ended. The window is 60 days from that loss.
Before the first day, three questions
- “What is the exact date my coverage starts?” A date, not a formula.
- “Is the plan fully insured or self-funded?” It decides which law protects you and which regulator hears a complaint. Why it matters.
- “Which plans are offered, and can I see the network before I choose?” Then check your own doctors against it by phone rather than by directory. How to verify a provider takes a plan.
The third one is worth doing during the offer stage rather than during open enrollment at the new employer. A plan that does not include the practice you have used for ten years is a real cost of the job, and it is easier to discuss before you start.
Questions people ask
How long can an employer make me wait for health insurance?
No more than 90 calendar days, for any employer of any size. An orientation period of up to one month may precede it, and the 90 days start the day after.
Is “the first of the month after 90 days” legal?
Only if that date falls on or before day 90. If it lands later, it exceeds the cap. Ask for the exact date rather than the formula.
Does the rule apply to small employers?
Yes. The 90-day limit applies to all group health plans regardless of size and regardless of whether the plan is fully insured or self-funded.
What if eligibility depends on hours instead of days?
A cumulative hours requirement may not exceed 1,200 hours.
How do I cover the gap before coverage starts?
Do not cancel old coverage early; use COBRA’s retroactive election if the previous job had a plan; or apply for the Essential Plan or Medicaid, which have no enrollment season.
Should I buy a short-term plan for the gap?
You cannot. Short-term, limited-duration insurance is prohibited in New York, because every individual plan sold here must be comprehensive and cover essential health benefits. Anything advertised that way is a different kind of product.
Sources
- 29 CFR 2590.715-2708 — prohibition on waiting periods that exceed 90 days (checked 2026-09-14)
- NY State of Health — special enrollment periods (checked 2026-09-14)
- NYS Department of Financial Services — Insurance Circular Letter No. 7 (2018), short-term limited duration insurance (checked 2026-09-14)
More in Life Changes and Health Coverage in New York: Every Clock That Starts
- Your Student Health Plan Is Ending — A student health plan ends on an academic-calendar date, often weeks after graduation. Losing it opens a 60-day window, and two New York options beat it.
- Your Income Changed Mid-Year: The 30-Day Rule — Enrolled in New York? You have 30 days to report an income change, not 60. A raise left unreported becomes a tax bill; a drop can leave free coverage unclaimed.
- A Death in the Family: What Happens to the Coverage — When the policyholder dies, the family has 60 days to tell the plan and keep up to 36 months of COBRA. Later bills are generally claims against the estate.
This page explains how the system works. It is not medical advice. More.