No. Employers are not required to offer part-time workers health insurance under federal law. The Affordable Care Act’s coverage mandate reaches only employees who average at least 30 hours per week, and only at companies with 50 or more full-time equivalent workers. If you fall below that hours threshold, or you work for a smaller company, no federal rule forces your employer to cover you. Some employers offer part-time coverage anyway, and several alternative paths exist if yours doesn’t.
Why Part-Time Hours Fall Outside the Federal Mandate
The 30-hour threshold is the dividing line. For purposes of the ACA’s employer mandate, a full-time employee is someone who averages at least 30 hours per week, or 130 hours per month, in a given calendar month.1Internal Revenue Service. Identifying Full-Time Employees Anyone below that line is part-time in the eyes of the law, and no federal penalty attaches to leaving them uncovered.
How employers measure your hours matters if you’re near the line. The IRS lets employers use one of two methods. Under the monthly measurement method, the employer checks each month whether you hit 130 hours. Under the look-back method, the employer tracks your hours over a longer period (often 6 or 12 months) and locks in your status for a matching “stability period.”1Internal Revenue Service. Identifying Full-Time Employees That second approach exists because retail, hospitality, and healthcare schedules often bounce between 25 and 35 hours by season.
The practical upshot: if you routinely pick up extra shifts and a look-back period shows you averaged 30 hours or more, you count as full-time during the stability period regardless of what any single month looks like. An employer that lets scheduling drift too close to 30 hours can trigger a coverage obligation it didn’t plan for.
The 50-Employee Threshold
Even the 30-hour rule only applies at companies large enough to qualify as an Applicable Large Employer. An ALE is one that averaged at least 50 full-time employees, including full-time equivalents, during the prior calendar year.2Internal Revenue Service. a href=”https://www.irs.gov/affordable-care-act/employers/determining-if-an-employer-is-an-applicable-large-employer” target=”_blank” rel=”noopener”>Determining if an Employer Is an Applicable Large Employer If your company has fewer than 50 full-time equivalents, the ACA’s employer mandate doesn’t apply to it at all, no matter how many hours anyone works.
Part-time workers still figure into that head count indirectly. The IRS adds up all hours worked by non-full-time employees in a month, caps each person at 120 hours, and divides the total by 120. A business with 40 full-time workers and 15 part-timers averaging 60 hours a month would pick up 7.5 full-time equivalents from the part-time group, landing at 47.5 total. That’s below 50, so the mandate doesn’t apply. Add a few more part-timers, and it might.3Internal Revenue Service. Determining if an Employer Is an Applicable Large Employer
When Part-Time Employees Do Get Employer Coverage
Nothing in the ACA stops an employer from covering part-time workers. The law sets a floor, not a ceiling. Some large employers, particularly in tight labor markets, voluntarily extend health benefits to workers putting in as few as 20 hours per week. If that’s an option where you work, it may be worth more than a modest wage bump.
Individual Coverage HRAs
Employers of any size can set up an Individual Coverage Health Reimbursement Arrangement to reimburse workers for premiums on individual market policies. The employer defines eligible classes of employees, and part-time workers can be their own class. You buy an individual plan, and the employer reimburses you up to a set monthly allowance, tax-free. When an employer offers a traditional group plan to other classes as well, minimum class size rules kick in, generally at least 10 employees in the part-time class for employers with fewer than 100 workers.
Qualified Small Employer HRAs
Employers with fewer than 50 full-time equivalents that don’t offer a group plan can use a Qualified Small Employer HRA. For 2026, the maximum annual reimbursement is $6,450 for self-only coverage and $13,100 for family coverage. It’s a way for small employers to help part-timers pay for individual insurance without setting up a group plan.
If Your Hours Were Cut From Full-Time
Losing employer coverage because your hours dropped isn’t the same as never having it. A reduction in hours that pushes you below the plan’s eligibility threshold is a qualifying event under COBRA. You and any covered family members can continue the same group plan for up to 18 months, though you’ll pay the full premium plus a 2% administrative fee. If you became entitled to Medicare less than 18 months before your hours were cut, your spouse and dependents may be able to continue COBRA for up to 36 months from the date you became Medicare-eligible.4U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Workers
COBRA is expensive because you’re picking up the employer’s share too. But it prevents a gap while you look at other options.
Where to Get Coverage on Your Own
Part-time workers without employer coverage have real options. Each one comes with its own enrollment windows and eligibility rules.
The Health Insurance Marketplace
Healthcare.gov, or your state’s exchange if it runs one, is the most common route. You compare plans during open enrollment, and depending on household income and family size you may qualify for premium tax credits that lower your monthly cost.5Internal Revenue Service. Eligibility for the Premium Tax Credit Subsidies scale up as income drops.6HealthCare.gov. Low Cost Marketplace Health Care, Qualifying Income Levels Losing eligibility for employer coverage, including through a cut in hours, also opens a special enrollment period outside the annual window.
Medicaid
Medicaid provides free or low-cost coverage to people with limited income. Eligibility varies by state, but federally required groups include children, pregnant individuals, parents of dependent children, and people with disabilities.7Medicaid.gov. List of Medicaid Eligibility Groups Most states have also expanded Medicaid to adults with incomes up to 138% of the federal poverty level, regardless of family status. If you’re a part-time worker on a modest income, check Medicaid before you shop the Marketplace. If you qualify, it’s almost always cheaper.
A Spouse’s or Parent’s Plan
Joining a spouse’s employer plan is another common route. Most group plans allow dependents to enroll during annual open enrollment or after a qualifying life event like losing your own coverage. And if you’re under 26, you can stay on a parent’s plan regardless of your employment status, marital status, or whether you’re claimed as a tax dependent.
State Laws May Go Further
A handful of states impose health coverage requirements that go beyond the ACA. Some set lower hour thresholds or require certain industries to cover part-time workers. Those rules vary significantly, so check your state’s labor or insurance department for anything extra that might apply to you. The federal rules described above are the nationwide baseline, not the full picture in every state.