You accepted the offer. Now figure out exactly when your coverage ends at your old job, when it starts at the new one, and what to do with the gap in between. Here’s the week-by-week playbook.
Health Insurance When Starting a New Job
Starting a new job is one of the most common times people face a gap in health coverage. Most employers impose a waiting period before benefits begin, and leaving your previous job ends your prior employer's coverage. Here is how to manage the transition and what to do about the gap.
How Long Is the Waiting Period at a New Job?
Under the ACA, employer-sponsored health plans cannot impose a waiting period longer than 90 days after an employee becomes eligible for coverage. Many employers use shorter periods — 30 or 60 days is common at larger companies. Some employers start coverage on the first day of employment or the first day of the following month after your start date. Check your offer letter or ask HR for the exact coverage start date before your first day.
When Does Your Old Coverage End?
Coverage under your previous employer's plan typically ends on either:
- The last day you worked
- The last day of the month in which you worked your last day
Your COBRA election notice from your former employer will specify the exact coverage end date. Confirm this before your last day so you know exactly when the gap begins.
Options for Covering the Gap
Option 1 — ACA Marketplace: Losing employer coverage is a qualifying life event that opens a 60-day Special Enrollment Period (SEP). You can enroll in a marketplace plan to cover the gap between jobs. When your new employer's coverage begins, you can drop the marketplace plan (another qualifying event). If your expected income for the year qualifies you for subsidies, your marketplace plan during the gap may be subsidized.
Option 2 — COBRA: You can elect COBRA to continue your former employer's plan for up to 18 months. The advantage is continuity — same plan, same providers, same in-progress care. The significant disadvantage is cost: you pay the full premium (both employee and employer share) plus a 2% administrative fee. For a short gap of 30–60 days, COBRA may make sense if you have ongoing treatment. For longer gaps, a marketplace plan is usually much cheaper.
Option 3 — Spouse's or parent's plan: Losing your own coverage is a qualifying event to join a spouse's employer plan outside their open enrollment. If you are under 26, you can also join a parent's employer plan within 30 days of losing your own coverage. Contact the HR department immediately — the window to elect coverage typically closes within 30 days of the triggering event.
Option 4 — Wait and see (short gaps only): If your new employer's coverage starts within a few weeks and you are generally healthy, you may choose to be briefly uninsured. This is a risk decision. Emergency room care without insurance can be extremely expensive. Evaluate your health situation carefully before going without coverage for any period.
Evaluating Your New Employer's Plan
When your employer's benefit materials arrive, do not simply elect the default plan. Compare each option:
- Check your doctors are in-network. Call your current providers to confirm they accept the new plan.
- Compare total annual cost. Calculate (annual premium) + (expected cost-sharing) under each plan option.
- Check drug formulary. If you take prescription medications, verify they are covered at an acceptable tier under each plan.
- Consider the HMO vs. PPO tradeoff. HMO plans are cheaper but restrict you to an in-network provider list. PPO plans are more flexible but cost more in premium.
- Evaluate the HSA option. If your employer offers an HDHP with an HSA contribution, a healthy employee may come out ahead financially even with the higher deductible.
The COBRA Election Trick
You have 60 days to elect COBRA, and coverage can be elected retroactively. If you are in a gap and you do not use any medical care, you can decline COBRA and enroll in a marketplace plan instead. If you do need emergency care during the gap, you can retroactively elect COBRA (paying all back premiums) and have coverage for that period. This strategy works only if you can afford the retroactive premiums and keep the COBRA election option open.
Need help comparing your options during a job transition? Call (713) 575-9904 for a free consultation.