If you work part-time, you can get health insurance through four main routes: an employer plan (if your company offers one voluntarily), the Health Insurance Marketplace, Medicaid, or COBRA if your hours were recently cut from a job that covered you. Federal law does not force employers to cover workers who average fewer than 30 hours per week, but roughly 60 percent of part-time workers are at companies that offer coverage anyway. Which path fits you depends on your hours, your employer’s size, your household income, and whether your state has expanded Medicaid.
When Your Employer Has to Offer You a Plan
Under the Affordable Care Act, a full-time employee is someone who works an average of at least 30 hours per week, or 130 hours in a calendar month.1Office of the Law Revision Counsel. 26 USC 4980H Shared Responsibility for Employers Regarding Health Coverage That 30-hour mark, not 35 or 40, is what triggers an employer’s legal duty to offer coverage. If you regularly hit 30 hours, you are full-time for insurance purposes no matter what your employer calls your position internally. A company might label you part-time at 32 hours per week, but you would still be legally full-time under the ACA.
If you work fewer than 30 hours per week, federal law treats you as part-time and your employer has no obligation to offer you a health plan. The rule applies to Applicable Large Employers, meaning businesses that employed an average of at least 50 full-time or full-time-equivalent employees during the prior year.2Internal Revenue Service. Employer Shared Responsibility Provisions Smaller employers face no federal requirement to cover anyone.
If your hours fluctuate week to week, keep your own records. Employers of variable-hour workers are allowed to average your hours over a measurement period of 3 to 12 months before deciding whether you qualify as full-time, so tracking what you actually worked helps you confirm their classification matches reality.3IRS.gov. Instructions for Forms 1094-C and 1095-C
When Employers Offer Coverage Anyway
Nothing stops an employer from covering part-time staff voluntarily, and many retail, hospitality, and food-service companies offer benefits to employees working as few as 20 hours per week. The place to confirm your eligibility is your employer’s Summary of Benefits and Coverage, usually posted on an internal HR portal. Look for the eligibility section; it will state the minimum hours required, commonly 20 or 25 per week at companies that extend benefits to part-timers. Your employee handbook or offer letter should list the same thresholds.
Once you qualify, the ACA caps the waiting period before your coverage starts at 90 days.4eCFR. 26 CFR 54.9815-2708 – Prohibition on Waiting Periods That Exceed 90 Days Employers are allowed to add a separate orientation period of up to one calendar month before the 90-day clock begins, so in a worst case your coverage could be delayed roughly four months from your eligibility date.
You typically have 30 days from your hire date or the date you become eligible to enroll through the company’s benefits portal. If you miss that window, you generally have to wait until the next annual open enrollment, which most employers hold in the fall, unless a qualifying life event opens a special enrollment period.
If your employer offers dependent coverage, the plan must let your children stay on your insurance until they turn 26, regardless of whether they live with you, attend school, are financially dependent, or have access to coverage through their own job.5eCFR. 45 CFR 147.120 – Eligibility of Children Until at Least Age 26
If Your Hours Were Just Cut: COBRA
If you already had employer-sponsored insurance and your hours were reduced below the plan’s eligibility threshold, that reduction is itself a qualifying event for COBRA continuation coverage.6eCFR. 26 CFR 54.4980B-4 – Qualifying Events COBRA lets you keep the same group plan for up to 18 months after a reduction in hours, but you pay the full premium yourself plus an administrative fee of up to 2 percent.7U.S. Department of Labor. COBRA Continuation Coverage Because you absorb what your employer used to pay, the cost often jumps sharply.
You have 60 days from the date you receive the COBRA election notice to decide, and coverage is retroactive to the date you lost your employer plan, so there is no gap if you elect it. COBRA applies to employers with 20 or more employees. If your employer is smaller, your state may have a “mini-COBRA” law offering a shorter continuation right, with rules that vary by state.
Buying Your Own Plan on the Marketplace
Part-time workers who do not have access to an affordable employer plan can shop for individual coverage through the Health Insurance Marketplace.8Office of the Law Revision Counsel. 42 USC 18031 – Affordable Choices of Health Benefit Plans Plans are grouped into Bronze, Silver, Gold, and Platinum tiers, and the application screens you for financial help based on your projected annual income.
Premium Tax Credits
Premium tax credits lower your monthly premium and are available to households with incomes between 100 and 400 percent of the federal poverty level. For a single person in 2026, that range runs from roughly $15,960 to $63,840.9U.S. Department of Health and Human Services. 2026 Poverty Guidelines The credit scales with income: at the top of the range, you would pay no more than 9.96 percent of your income for a benchmark Silver plan.10IRS.gov. Rev. Proc. 2025-25
One caveat on timing: the enhanced premium tax credits that temporarily removed the 400 percent income cap and lowered costs for higher earners were set to expire at the end of 2025. If Congress has not extended them when you apply, people earning above 400 percent of the poverty level will no longer qualify for any premium assistance, and credits below that line will be less generous than in recent years.
You cannot claim Marketplace premium tax credits if your employer offers coverage that is both affordable (your cost for self-only coverage is under 9.96 percent of household income) and provides minimum value (covers at least 60 percent of average health costs). The Marketplace application walks you through that check.
Cost-Sharing Reductions
If your income falls between 100 and 250 percent of the poverty level, up to about $39,900 for a single person in 2026, you may also qualify for cost-sharing reductions, but only if you enroll in a Silver plan. These lower your deductibles, copays, and out-of-pocket maximums. At the lowest income tier, the annual out-of-pocket cap on a Silver plan can drop to roughly $3,500.
When to Enroll
Marketplace open enrollment usually begins November 1 and runs into mid-January.11Centers for Medicare & Medicaid Services. Marketplace 2026 Open Enrollment Period Report – National Snapshot Outside that window, you can enroll only after a qualifying life event, and you have 60 days from the event to sign up.
Medicaid for Low-Income Part-Time Workers
In states that have expanded Medicaid under the ACA, adults with household incomes at or below 138 percent of the federal poverty level qualify regardless of family status or work history.12HealthCare.gov. Medicaid Expansion and What It Means for You For a single person in 2026, that threshold is approximately $22,020. Part-time workers with low earnings often qualify, and Medicaid enrolls year-round, with no limited window.
About 10 states have not expanded Medicaid as of 2026. In most of those states, non-disabled adults without dependent children face very narrow eligibility, often requiring incomes well below 100 percent of the poverty level. Because Marketplace premium tax credits start at 100 percent of the poverty level, some low-income adults in non-expansion states end up in a “coverage gap,” earning too much for traditional Medicaid but too little for Marketplace subsidies. If you fall into that gap, check directly with your state’s Medicaid office, since rules for parents, pregnant individuals, and people with disabilities are often more generous than the general adult rules.
Enrolling After a Life Change
A qualifying life event opens a special enrollment window outside the regular enrollment periods, generally 30 days for employer plans and 60 days for Marketplace plans.13HealthCare.gov. Getting Health Coverage Outside Open Enrollment Common qualifying events include:
- Marriage or divorce. Coverage through an employer plan typically starts the first of the following month.
- Birth or adoption. A newborn or adopted child can be covered retroactively to the date of birth or placement.14eCFR. 26 CFR 54.9801-6 – Special Enrollment Periods
- Loss of other health coverage, whether through a spouse’s job, aging off a parent’s plan, or exhausting COBRA.
- A move to a new ZIP code or county where different plans are available.
If none of these apply and you missed open enrollment, Medicaid is the one route still open to you year-round, provided your income qualifies.