Illinois FMLA: Eligibility, Leave Rights, and State Add-On Laws

The Family and Medical Leave Act gives eligible Illinois employees up to 12 weeks of unpaid, job-protected leave each year for serious health conditions, a new child, or certain family and military needs, and Illinois layers on several state laws — paid leave, bereavement, protections for crime victims, and school visitation rights — that reach workers the federal law leaves out. Understanding the Illinois FMLA picture means understanding both layers, because they overlap in ways that can either extend your time off or, if you’re not careful, quietly drain benefits you’ve already earned.

Who Qualifies

Two things have to be true at once: your employer has to be covered, and you have to be an eligible employee.

On the employer side, private-sector companies are covered if they employed 50 or more workers during at least 20 workweeks in the current or previous calendar year. Public agencies and public or private elementary and secondary schools are covered regardless of size.¹

On the employee side, you need three things:

At least 12 months with the employer. Those months don’t have to be consecutive.
At least 1,250 hours of actual work in the 12 months before your leave starts. Paid time off and previous FMLA leave don’t count.
A worksite with at least 50 employees within a 75-mile radius.

The 75-mile rule catches people off guard. Working for a national company doesn’t automatically qualify you; if your specific office is a small satellite and there aren’t 50 employees within 75 miles, you’re out.²

What You Can Take Leave For

Eligible employees get up to 12 workweeks of FMLA leave in a 12-month period for any of these reasons:³

Your own serious health condition, meaning one that involves inpatient care or continuing treatment and prevents you from doing your job.
Caring for a spouse, child, or parent with a serious health condition.
The birth of your child and bonding during the first year. Both parents have equal rights to this leave regardless of gender.
Placement of a child with you for adoption or foster care, and bonding during the first year.
Certain urgent needs (a “qualifying exigency”) arising from a spouse, child, or parent being deployed or called to covered active duty abroad.⁴

A separate, longer entitlement applies to military caregiver leave. If you’re the spouse, child, parent, or next of kin of a covered servicemember with a serious injury or illness, you can take up to 26 workweeks in a single 12-month period.⁵

Your employer chooses one of four methods for measuring the 12-month period against which your leave is counted (calendar year, a fixed 12-month period, a rolling forward count, or a rolling backward count). The rolling backward count is the most restrictive because it constantly recalculates what you have left. Ask HR which method applies before you plan.

Taking Leave in Pieces

You don’t have to take all 12 weeks at once. If your condition flares periodically, or you need ongoing treatment like chemotherapy, you can take FMLA leave intermittently or on a reduced schedule. For a serious health condition, intermittent leave has to be medically necessary, and your provider’s certification needs to support the schedule you’re taking.⁶

Bonding leave for a new child works differently. You can only take that intermittently if your employer agrees; otherwise, it comes in one continuous block.⁶

Only the actual time away counts against your 12 weeks. Employers can track it in increments no larger than one hour.⁷

Is FMLA Leave Paid?

FMLA leave is unpaid on its own. But either you or your employer can substitute accrued paid leave — vacation, sick, or personal days — for the unpaid FMLA time, and the two run concurrently. Many employer policies require this substitution, which means your paid time off can drain during your absence whether you want it to or not.⁸

Illinois workers should know one refinement. A 2025 DOL opinion letter clarified that if you’re receiving benefits under a state or local paid leave program, your employer cannot force you to burn accrued paid leave on top of those benefits. The substitution rule only kicks in when your FMLA leave is otherwise unpaid. You and your employer can still agree to top off state benefits with accrued leave to get closer to full wages, but the employer can’t mandate it.

How to Request Leave

When the need is foreseeable, like a scheduled surgery or an expected due date, give at least 30 days’ notice. If the need is sudden, notify your employer as soon as practicable.⁹

You don’t have to say “FMLA” when you ask. You do have to give enough information for the employer to recognize the leave may qualify: the nature of the condition, the expected timing, and whether you’ve taken FMLA leave for this reason before.

Expect a request for medical certification. The DOL publishes optional forms — WH-380-E for your own condition and WH-380-F for a family member — that ask your provider to describe the condition, when it began, how long it will last, and why it keeps you from working or requires you to give care.¹⁰ You generally have 15 calendar days to return it. If the form is incomplete, the employer has to give you a reasonable chance to fix it before denying leave.

What Your Employer Owes You

Within five business days of learning your leave may qualify, your employer has to give you an eligibility notice (telling you whether you qualify) and a rights-and-responsibilities notice (spelling out what you must do during leave, including any certification requirement).¹¹

Your group health insurance continues on the same terms as if you were working. You still have to pay your share of the premium.¹² If your payment falls more than 30 days behind and no employer policy extends that window, the coverage obligation can end.¹³

When your leave ends, you’re entitled to return to the same job or an equivalent one — same pay, same benefits, same working conditions — even if the employer hired a replacement or restructured while you were gone.¹⁴

If your leave was for your own serious health condition, your employer can require a fitness-for-duty certification before you return, but only if the requirement is applied uniformly and you were told about it in the rights-and-responsibilities notice.¹⁵

One narrow exception to reinstatement: “key employees.” If you’re salaried and among the highest-paid 10 percent of the employer’s workforce within 75 miles, the employer can deny reinstatement (not the leave itself) upon showing that bringing you back would cause substantial and grievous economic injury. You have to be told of your key-employee status when you request leave and again if the employer decides to deny reinstatement, and the employer must reevaluate if circumstances change during your leave.¹⁶

Illinois Laws That Add to FMLA

Illinois has enacted several leave laws that either fill gaps in the federal FMLA or cover employees who don’t qualify for it at all.

Paid Leave for All Workers Act

Since January 1, 2024, nearly all Illinois employees earn paid leave. You accrue one hour for every 40 hours worked, up to at least 40 hours per year, and you can use it for any reason with no requirement to justify it. It’s independent of FMLA, needs no medical certification, and can cover short absences or supplement unpaid FMLA time.¹⁷

Victims’ Economic Security and Safety Act (VESSA)

VESSA gives up to 12 weeks of unpaid leave per 12-month period to employees who are victims of domestic violence, sexual violence, gender violence, or any other crime of violence, and to employees whose family or household members are victims. Leave can be used for medical treatment, legal proceedings, safety planning, counseling, or relocation. Available leave may vary by employer size, and you don’t need to qualify for FMLA to use it.¹⁸

Family Bereavement Leave Act

All employees can take up to 10 workdays of unpaid bereavement leave to grieve a covered family member, attend a funeral, or handle arrangements. The law also covers a miscarriage, stillbirth, unsuccessful round of fertility treatment, failed adoption match, failed surrogacy agreement, or a diagnosis that negatively affects pregnancy or fertility.¹⁹

Child Extended Bereavement Leave Act

When a parent loses a child to suicide or homicide, this law provides more time. Employees of large employers (250 or more full-time Illinois employees) can take up to 12 weeks of unpaid leave. Employees of smaller employers (50 to 249 full-time Illinois employees) can take up to 6 weeks. You need at least two weeks of employment to be eligible.²⁰

School Visitation Rights Act

If you need to attend a school conference, behavioral meeting, or academic meeting for your child and it can’t be scheduled outside work hours, you can take up to 8 hours of unpaid leave per school year, with no more than 4 hours on any single day. You can only use this leave after exhausting accrued vacation, personal, and compensatory leave. Sick and disability leave don’t have to be exhausted first.²¹

Employee Sick Leave Act

If your employer already provides personal sick leave, this law requires the employer to let you use at least a portion of it to care for covered family members. It doesn’t create new leave; it stops employers from limiting existing sick time to your own illnesses only.²²

If Your Employer Violates the Law

When an employer interferes with FMLA rights or retaliates against you for taking leave, you have two options. File a complaint with the U.S. Department of Labor’s Wage and Hour Division, or bring a private lawsuit in federal or state court.²³

A successful lawsuit can recover lost wages, salary, and denied benefits with interest. If you didn’t lose wages but incurred other costs (like paying for care you would have provided yourself), you can recover those actual monetary losses up to 12 weeks of wages, or 26 weeks for military caregiver leave. The court then adds an equal amount as liquidated damages unless the employer proves it acted in good faith with reasonable grounds to believe it was following the law. The employer also pays attorney fees, expert witness fees, and court costs.²⁴

You generally have two years from the date of the violation to file. If the violation was willful, you have three.²³

1
U.S. Department of Labor. Fact Sheet 28 – The Family and Medical Leave Act
2
U.S. Department of Labor. FMLA Frequently Asked Questions
3
U.S. Department of Labor. Fact Sheet 28F – Reasons That Workers May Take Leave Under the Family and Medical Leave Act
4
eCFR. 29 CFR 825.126 – Leave Because of a Qualifying Exigency
5
U.S. Department of Labor. Fact Sheet 28M – Using FMLA Leave Because of a Family Members Service in the Military
6
eCFR. 29 CFR 825.202 – Intermittent Leave or Reduced Leave Schedule
7
U.S. Department of Labor. Fact Sheet 28I – Counting Leave Use Under the Family and Medical Leave Act
8
eCFR. 29 CFR 825.207 – Substitution of Paid Leave
9
eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave
10
U.S. Department of Labor. FMLA Forms
11
eCFR. 29 CFR 825.300 – Employer Notice Requirements
12
eCFR. 29 CFR 825.210 – Employee Payment of Group Health Benefit Premiums
13
eCFR. 29 CFR 825.212 – Employee Failure to Pay Health Plan Premium Payments
14
eCFR. 29 CFR 825.214 – Employee Right to Reinstatement
15
U.S. Department of Labor. Family and Medical Leave Act Advisor – Fitness-for-Duty Certification
16
U.S. Department of Labor. Family and Medical Leave Act Advisor – Key Employees
17
Illinois General Assembly. Illinois Code 820 ILCS 192 – Paid Leave for All Workers Act
18
Illinois General Assembly. Illinois Code 820 ILCS 180 – Victims Economic Security and Safety Act
19
Illinois General Assembly. Illinois Code 820 ILCS 154 – Family Bereavement Leave Act
20
Illinois General Assembly. Illinois Code 820 ILCS 156 – Child Extended Bereavement Leave Act
21
Illinois General Assembly. Illinois Code 820 ILCS 147 – School Visitation Rights Act
22
Illinois Department of Labor. Employee Sick Leave Act
23
U.S. Department of Labor. Protection for Individuals Under the FMLA
24
Office of the Law Revision Counsel. 29 USC 2617 – Enforcement