Maternity leave in Illinois runs up to 12 weeks of unpaid, job-protected time off for workers who qualify under the federal Family and Medical Leave Act. The state itself does not set a fixed maternity leave length, and none of the baseline laws require your employer to pay you while you are out. The actual length and pay you end up with depend on your employer’s size, how long you’ve worked there, and whether you can stack short-term disability, accrued paid leave, or a Chicago benefit on top of the unpaid federal protection.
The 12-Week FMLA Baseline
The Family and Medical Leave Act gives eligible employees up to 12 workweeks of unpaid, job-protected leave in a 12-month period for the birth and care of a newborn.1U.S. Department of Labor. Family and Medical Leave Act Job-protected means your employer must hold your position, or give you an equivalent one, until you come back. For most Illinois workers who qualify, this 12-week block is the frame everything else fits inside.
All three of these have to be true for you to qualify:
- Your employer has at least 50 employees within 75 miles of your worksite.
- You have worked for this employer for at least 12 months.
- You have logged at least 1,250 hours during the 12 months before your leave starts, which works out to roughly 24 hours a week.
Miss one of the three and FMLA does not apply.2U.S. Department of Labor. Fact Sheet 28Q: Taking Leave from Work for the Birth, Placement, and Bonding with a Child under the FMLA That rules out a lot of workers at smaller companies or anyone who started a job less than a year ago.
One deadline worth planning around: all FMLA leave for bonding with a newborn has to be finished within 12 months of the child’s birth. Unused weeks do not carry over.3eCFR. 29 CFR 825.120 – Leave for Pregnancy or Birth
During FMLA leave, your employer must keep your group health insurance active on the same terms as if you were still working. You still owe your share of the premium.4U.S. Department of Labor. Family and Medical Leave Act Advisor: Employee Payment of Group Health Benefit Premiums
If You Don’t Qualify for FMLA
Illinois does not have its own version of FMLA that sets a specific number of leave weeks for workers at smaller employers. What it does have is a pregnancy accommodation requirement under the Illinois Human Rights Act that reaches every employer with at least one employee.5Illinois General Assembly. Illinois Code 775 ILCS 5/2-101 – Definitions A reasonable accommodation under that law can include a leave of absence, but the length is not spelled out in weeks. You and your employer go through an interactive process to settle on an accommodation that works for your medical situation without creating an undue hardship for the business.6Illinois Department of Human Rights. Pregnancy Rights in Illinois
The federal Pregnant Workers Fairness Act fills the mid-size gap. It requires employers with 15 or more employees to provide reasonable accommodations for limitations related to pregnancy, childbirth, or recovery, which can include time off to recover.7U.S. Equal Employment Opportunity Commission. What You Should Know About the Pregnant Workers Fairness Act It also bars your employer from forcing you onto leave if a different accommodation would let you keep working, which matters if you want to stay on the job longer before your due date or come back sooner on a modified schedule.
Neither law sets a leave length. In practice, a routine recovery often tracks the medical window a doctor would certify, roughly six weeks after a vaginal delivery and eight weeks after a C-section.
Getting Paid During Leave
FMLA, the IHRA, and the PWFA are all unpaid on their own. Income during maternity leave in Illinois comes from stacking separate benefits on top.
Short-Term Disability Insurance
Short-term disability insurance replaces part of your income when a medical condition keeps you from working, and pregnancy qualifies. Illinois does not require employers to offer it, but many do. You can also buy an individual policy, with premiums typically running $25 to $150 per month depending on your age, income, and benefit level.
A typical policy pays 50% to 70% of your salary for a set recovery period, commonly six weeks after a vaginal delivery and eight weeks after a C-section, with a one- to two-week waiting period before payments start. It runs at the same time as FMLA leave, so you draw income without burning extra calendar time. If you want this coverage, enroll before becoming pregnant: most policies exclude pre-existing conditions.
Illinois Paid Leave for All Workers Act
Under this state law, employees earn one hour of paid leave for every 40 hours worked, up to a minimum of 40 hours per 12-month period. You can use the leave for any reason, and your employer cannot ask why. Accrual starts your first day, but you have to wait 90 days before you can use what you’ve banked.8Illinois General Assembly. Illinois Code 820 ILCS 192/15 – Paid Leave for All Workers Act Forty hours is roughly one week, so this is a top-up, not a maternity leave on its own.9Illinois Department of Labor. Paid Leave for All Workers Act
Chicago’s Paid Leave Ordinance
If you work inside Chicago city limits, you accrue faster: one hour of paid leave and one hour of paid sick leave for every 35 hours worked. The paid sick leave is a separate bank that covers your own medical needs, including pregnancy and recovery, so Chicago workers earn two kinds of paid time off at once.10City of Chicago. Paid Leave and Paid Sick Leave
What a Realistic Leave Actually Looks Like
For most Illinois workers who qualify for FMLA, a 12-week leave is built out of overlapping pieces rather than one benefit. A common pattern:
- FMLA starts at or near the due date and runs 12 weeks, giving you job protection the whole way through.
- Short-term disability pays a percentage of your salary during the six- to eight-week medical recovery window, running concurrently with FMLA.
- Accrued paid leave under the state law, or paid leave plus paid sick leave under the Chicago ordinance, covers additional paid days.
- The remaining FMLA weeks are unpaid bonding time.
That combination typically yields around 12 weeks off, with partial pay during roughly half of it. If you work for a smaller employer and FMLA is off the table, the length comes out of the interactive process under the IHRA or PWFA rather than a fixed statutory number, and short-term disability (if you have it) will still cover the medical recovery portion.
Giving Notice So You Keep the Full Leave
Notify your employer at least 30 days before you plan to start leave, assuming you know the approximate delivery date. The notice does not need to be formal. A short written message that you are requesting leave for the birth of your child, with your expected delivery date and how long you expect to be out, does the job.11U.S. Department of Labor. Fact Sheet 28E: Employee Notice Requirements under the Family and Medical Leave Act
Skip the 30 days without a reasonable excuse and your employer can push back the start of FMLA protection by up to 30 days from the date you actually give notice. Days you miss before that delayed start may not be protected.12eCFR. 29 CFR 825.304 – Employee Failure to Provide Notice
Coming Back to Work
After FMLA leave, your employer must put you back in the same job or one that is virtually identical in pay, benefits, duties, and working conditions, with the same level of responsibility and authority. A cost-of-living raise you missed while out has to be applied to your pay on return. Health insurance, retirement plan eligibility, and accrued sick leave pick up where they left off, with no re-qualification period.13U.S. Department of Labor. Family and Medical Leave Act Advisor: Equivalent Position and Benefits Your employer cannot move you to a different office across town or switch your shift unless that is what you held before.
Once you’re back, the PUMP for Nursing Mothers Act requires your employer to give you reasonable break time to express breast milk each time you need to, for up to one year after your child’s birth. The space has to be shielded from view, free from intrusion, and cannot be a bathroom.14U.S. Department of Labor. FLSA Protections to Pump at Work If your employer gives paid breaks to other workers, pumping breaks have to be paid the same way; if you are completely relieved of all duties during the break, the time can be unpaid.15U.S. Department of Labor. Fact Sheet 73: Break Time for Nursing Mothers under the FLSA