How Long Does an Employer Have to Hold a Job for Medical Leave?

Under federal law, an employer generally has to hold your job for up to 12 weeks of unpaid medical leave in a 12-month period, as long as you and your employer both meet the Family and Medical Leave Act’s eligibility rules. That is the baseline answer to how long an employer has to hold a job for medical leave, but it is not the whole answer. The Americans with Disabilities Act can extend protection past 12 weeks when a defined additional period of leave would let you return to work. State laws frequently go further. Military caregiver leave runs up to 26 weeks. And your employer’s own policies or a union contract can add more on top.

The 12-Week FMLA Floor

The FMLA gives eligible employees up to 12 workweeks of unpaid, job-protected leave in a 12-month period for a serious health condition, to care for a spouse, child, or parent with a serious health condition, or for the birth or placement of a child.¹ When you return, your employer must put you back into the same job or one that is virtually identical in pay, benefits, duties, and authority.² Moving a supervisor into a role with less responsibility and calling it equivalent does not satisfy the law; the comparison is functional.

Your group health insurance also continues during the leave on the same terms as if you were still working. If the company paid 80% of your premium before, it keeps paying 80% while you are out.³

Who Actually Gets the 12 Weeks

FMLA leave is not automatic. You have to meet three requirements at the time your leave starts:

You have worked for your employer for at least 12 months, which do not need to be consecutive.
You have logged at least 1,250 hours in the 12 months immediately before leave begins.
Your employer has at least 50 employees within 75 miles of your worksite.

Public agencies and public and private elementary and secondary schools are covered no matter how many people they employ.² If you work for a smaller private employer or have not hit the tenure and hours thresholds, the FMLA’s 12-week guarantee does not apply to you, though state law or company policy may.

The leave itself is unpaid, but either you or your employer can require accrued paid time off (vacation, sick time, PTO) to run at the same time as FMLA leave. In that case your paycheck continues while the FMLA clock ticks down.⁴ Workers’ compensation leave can also run concurrently when the injury qualifies as a serious health condition.⁵

How “Per Year” Is Measured

The 12 weeks resets over a 12-month period, but employers can define that period four different ways:

The calendar year
Any fixed 12-month period, such as a fiscal year or your hire-date anniversary
A 12-month period measured forward from the first day you take FMLA leave
A rolling 12-month period measured backward from each day you use leave

The employer has to pick one method and apply it to everyone. If it has not chosen one, the method most favorable to you controls.⁶ The method matters because it changes how much leave you have available in practice. Under the calendar-year approach, you could in theory take 12 weeks in December and another 12 starting in January, stringing together close to six months of protection. A rolling method blocks that.

When the ADA Extends Protection Past 12 Weeks

When your 12 weeks of FMLA leave runs out, or you were never eligible, the Americans with Disabilities Act can pick up where the FMLA stops. Extra leave beyond the FMLA entitlement can be a required reasonable accommodation if you have a qualifying disability and a finite additional period off would let you return and perform your job.⁷

The ADA does not set a specific number of weeks. Instead, you and your employer go through an interactive discussion about what you need and what the employer can absorb. A request for a defined extension with a return date is treated very differently from open-ended leave with no return in sight; indefinite leave can be an undue hardship on the employer.

Whether a specific extension creates an undue hardship depends on the cost of the accommodation, the employer’s size and financial resources, and the nature of the business.⁸ Six additional weeks at a 5,000-person company is not the same request as six weeks at a 20-person firm. The employer can ask for medical documentation to evaluate your limitations and the accommodation, but only what is needed for that purpose, not your full medical history.⁹

Reassignment When You Cannot Return to Your Old Job

If additional leave will not get you back to your original position, the ADA may require reassignment to a vacant position you are qualified for. Reassignment is the accommodation of last resort, used after other options are exhausted or would create undue hardship. If no equivalent role is open, the employer must consider a lower-level vacancy.⁷

Up to 26 Weeks for Military Caregiver Leave

The FMLA has a separate, longer entitlement for employees caring for a covered servicemember or veteran with a serious injury or illness. If you are the spouse, child, parent, or next of kin of a qualifying servicemember, you can take up to 26 workweeks of leave in a single 12-month period. The 26 weeks includes any other FMLA leave used in that period, so 4 weeks used for your own health condition leaves 22 weeks for caregiver leave.¹⁰

For veterans, coverage extends to those discharged under conditions other than dishonorable within the five years before you first take military caregiver leave. The 12-month period for this leave begins on the first day you use it, regardless of how the employer measures its regular FMLA year.¹⁰

State Laws and Company Policies That Add More Time

Federal law is a floor. Many states have enacted family and medical leave laws that go further than the FMLA in ways that directly affect how long your job is protected:

Some state laws apply to employers with as few as one to five employees, well below the FMLA’s 50-employee threshold.
Several states allow more than 12 weeks per year, and some combined family and medical leave programs allow up to 26 weeks.
More than a dozen states and the District of Columbia have paid family and medical leave programs that replace roughly 60% to 90% of wages up to a weekly cap while you are out.

A handful of states also run temporary disability insurance programs that pay partial wages for non-work-related illness or injury, often for up to 26 weeks. These are income-replacement programs, not job-protection laws, but they can overlap with FMLA leave.

When more than one law applies, the employer has to follow whichever is most favorable to you.¹¹ Company handbooks are worth reading closely too, because many employers voluntarily provide leave that goes beyond legal minimums. Union contracts can also expand your rights, though they cannot cut FMLA protection below the federal minimum.

One clarification about disability insurance: short-term and long-term disability policies pay a share of your income while you cannot work, but they do not by themselves guarantee your job will be waiting when you recover. Job protection comes from the FMLA, the ADA, state law, or company policy. Insurance can run alongside those protections but is not a substitute for them.

What You Have to Do to Keep the Protection

Job protection is conditional on your following the FMLA’s procedures. If the need for leave is foreseeable, such as a scheduled surgery, you must give at least 30 days’ advance notice. When something unexpected happens, notify the employer the same day you learn of the need or the next business day.¹²

Your employer can require medical certification from your health care provider confirming the serious health condition. You generally have 15 calendar days to provide it after being asked. Missing that deadline for foreseeable leave without a good reason lets the employer deny FMLA protection until the paperwork comes in.¹³ A completed form on your kitchen counter does not protect your job.

If you took leave for your own serious health condition, the employer can require a fitness-for-duty certification before letting you return. It has to tell you about that requirement at the start of your leave, not spring it on you at the end, and if it wants the certification to address the essential functions of your job, it had to give you a list of those functions when it designated your leave.¹⁴

If Your Employer Violates Your Rights

Firing you, demoting you, or taking any adverse action against you for requesting or using FMLA leave is illegal. The same protection covers filing complaints and cooperating with investigations. Retaliation dressed up as something else, like a suddenly announced reorganization that eliminates only your position while you are out, can still violate the law.

If you believe your FMLA rights were violated, you can file a complaint with the Department of Labor’s Wage and Hour Division at 1-866-487-9243 or through any local office. Complaints are handled confidentially, and the WHD does not disclose your identity to the employer without permission.¹⁵ You can also file a private lawsuit. The statute of limitations is two years from the last action you believe violated the law, or three years if the violation was willful.¹⁶

ADA claims go through the Equal Employment Opportunity Commission on a different filing timeline. When both the FMLA and the ADA apply, you may have grounds under both.

1
U.S. Department of Labor. Family and Medical Leave (FMLA)
2
U.S. Department of Labor. Fact Sheet #28A: Employee Protections under the Family and Medical Leave Act
3
eCFR. 29 CFR 825.209 – Maintenance of Employee Benefits
4
eCFR. 29 CFR 825.207 – Substitution of Paid Leave
5
U.S. Department of Labor. Fact Sheet #28P: Taking Leave from Work When You or Your Family Has a Health Condition
6
U.S. Department of Labor. Fact Sheet #28H: 12-Month Period under the Family and Medical Leave Act
7
U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Reasonable Accommodation and Undue Hardship under the ADA
8
GovInfo. 42 USC 12111 – Definitions
9
U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Disability-Related Inquiries and Medical Examinations of Employees under the ADA
10
U.S. Department of Labor. Fact Sheet #28M(b): Military Caregiver Leave for a Veteran under the FMLA
11
eCFR. 29 CFR Part 825 Subpart G – Effect of Other Laws, Employer Practices, and Collective Bargaining Agreements on Employee Rights Under FMLA
12
eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave
13
eCFR. 29 CFR 825.313 – Failure to Provide Certification
14
eCFR. 29 CFR 825.312 – Fitness-for-Duty Certification
15
U.S. Department of Labor Wage and Hour Division. Frequently Asked Questions: Complaints and the Investigation Process
16
U.S. Department of Labor. FMLA Advisor – Enforcement of the FMLA