Nearly 1 in 10 babies born in the United States now spends time in a neonatal intensive care unit — up from 8.7% in 2016 to 9.8% in 2023. For a baby born before 32 weeks, the average NICU stay runs 46 days. That's more than nine weeks of a parent splitting time between a hospital bassinet and a job that, until now, offered no legal protection once FMLA ran out.
Illinois just closed that gap. The Family Neonatal Intensive Care Leave Act (NICLA), signed by Governor J.B. Pritzker, takes effect June 1, 2026, and it applies to far more employers than most owners realize — including many small businesses that have never had to think about specialized leave categories before.
If you run a business in Illinois with 16 or more employees, here's exactly what changes, what it costs, and how to get compliant before the deadline.
Who's Covered
NICLA applies to any Illinois employer with 16 or more employees, regardless of how those employees are classified. Full-time, part-time, seasonal — it doesn't matter. There's no minimum tenure requirement either, which is a meaningful departure from FMLA's 12-months/1,250-hours eligibility test. A worker hired two weeks ago at a 20-person company is covered on day one.
Employers with 15 or fewer employees are exempt. But 16 employees is a low bar — plenty of single-location retail shops, restaurants, medical practices, and professional service firms cross that threshold without thinking of themselves as a "covered employer" for anything.
"Child" is defined broadly: biological, adopted, foster, stepchildren, legal wards, and children of anyone acting in loco parentis all qualify.
How Much Leave, and Who Gets How Much
The leave amount scales with company size:
| Employer size | Unpaid NICU leave |
|---|---|
| 16–50 employees | Up to 10 days |
| 51+ employees | Up to 20 days |
Leave can be taken continuously or intermittently — a parent doesn't have to burn it in one block. Employers may set a minimum increment for intermittent use, but it can't exceed two hours, so you can't force employees into full-day chunks if they only need a few hours to be at the hospital for rounds.
How It Stacks With FMLA (This Is the Part Employers Get Wrong)
NICLA doesn't replace FMLA — it runs after it. If an employee is FMLA-eligible, they must exhaust their FMLA leave first. Only once that's used up, and the child is still hospitalized, does NICLA leave kick in. For employees who aren't FMLA-eligible (too new, or the employer is too small for FMLA but still covered by NICLA), NICLA leave is available on its own.
One important asymmetry: unlike some paid-leave statutes, employers cannot require employees to exhaust accrued PTO or sick leave before using NICLA leave. Employees can choose to run PTO concurrently if they want continued pay, but that's their call, not yours.
Verification — What You Can (and Can't) Ask For
You're allowed to request "reasonable verification" that the child is or was hospitalized in a NICU. In practice, that means documentation from a medical provider confirming the hospitalization and its duration. What you can't do is demand medical details that would violate HIPAA or otherwise cross into protected health information you don't need. If your HR team is used to FMLA medical certifications, treat this the same way: collect just enough to confirm eligibility, and store it separately from the personnel file.
Reinstatement and Anti-Retaliation
At the end of NICU leave, the employee must be reinstated to their former position, or a substantially equivalent one, with no loss of benefits accrued before the leave started. Retaliating against an employee for requesting or taking NICU leave — demotion, reduced hours, termination, or anything that would deter a reasonable employee from exercising the right — is prohibited.
The Penalty That Should Get Your Attention
Violations carry civil penalties of up to $5,000 per affected employee, on top of any owed unpaid wages. Employees have 60 days to file a complaint with the Illinois Department of Labor or pursue a civil claim. For a company with 16 employees, a single mishandled leave request — say, denying intermittent leave in increments smaller than a full day, or failing to reinstate someone to an equivalent role — can turn into a five-figure liability fast if more than one employee is affected.
How NICLA Fits Alongside Illinois' Other Leave Laws
If you're already tracking the Illinois Paid Leave for All Workers Act (which requires up to 40 hours of paid leave per year for any reason, no documentation needed), NICLA is a separate, additional entitlement — not a substitute. An employee could, in theory, use their 40 hours of paid leave for something unrelated earlier in the year and still be fully entitled to NICU leave later. Don't let your handbook conflate the two policies or cap them against each other; the Illinois Department of Labor treats them as independent obligations, and merging them in your written policy is exactly the kind of technical violation that draws a complaint.
The same logic applies to any short-term disability or company-specific parental leave policy you already offer. NICLA sets a floor, not a ceiling — you can offer more generous leave, but you can't use an existing parental leave policy to argue you've already satisfied NICLA if the terms (unpaid, job-protected, specifically for NICU hospitalization) don't match.
A Worked Example
Say you run a 22-employee specialty manufacturing shop in Rockford. One of your machine operators has a baby born at 30 weeks in July 2026, and the baby spends five weeks in the NICU. Here's how the leave stacks:
- If the employee is FMLA-eligible (12+ months tenure, 1,250+ hours), they draw down their 12 weeks of FMLA leave first — unpaid, job-protected, health coverage continues.
- Because your company has 16–50 employees, once FMLA is exhausted (or immediately, if the employee isn't FMLA-eligible), they're entitled to up to 10 additional days of NICLA leave while the child remains hospitalized.
- The employee can take those 10 days intermittently — for example, four hours a day for several weeks to be present for NICU rounds — as long as your minimum increment policy (no more than two hours) allows it.
- You can request a letter from the NICU confirming hospitalization dates, but you can't ask for the baby's diagnosis or treatment details.
- When the leave ends, the employee returns to their machine operator role (or an equivalent one) at the same pay and shift differential they had before.
If instead your shop had 55 employees, step 2 would entitle the employee to up to 20 days rather than 10 — double the coverage, same process otherwise.
Compliance Checklist Before June 1, 2026
- Count your headcount correctly. If you're near the 16-employee line, confirm how you're counting part-time and seasonal workers — get this wrong in either direction and you're either non-compliant or over-applying a policy you don't need.
- Update the employee handbook. Add a NICLA section alongside your existing FMLA policy, spelling out the 10-day/20-day tiers based on your company size.
- Train whoever handles leave requests. HR generalists, office managers, or owners who personally handle HR at small companies all need to know NICLA exists and how it sequences after FMLA.
- Build a verification process that collects hospitalization confirmation without requesting more medical detail than necessary.
- Post required notices and include NICLA information in any paperwork you already send out for FMLA or other leave.
- Track leave usage precisely — especially if employees take it intermittently in two-hour increments, since undercounting or overcounting affects both compliance and payroll.
Why This Belongs in Your Bookkeeping, Not Just Your HR Files
Unpaid leave doesn't generate a payroll expense on its own, but the downstream effects do: temporary staffing to cover a NICU-leave employee's shifts, overtime for coworkers picking up slack, and any PTO an employee chooses to run concurrently all need to land in the right expense accounts to keep your labor-cost reporting accurate. If you're tracking headcount-based obligations like this alongside payroll, having those numbers in a system you can query — not buried in a spreadsheet an HR contractor updates once a quarter — makes the difference between catching a compliance gap early and finding out about it from a DOL complaint.
Keep Your Records as Clear as Your Compliance
New leave laws like NICLA are a reminder that small business finances and HR obligations are more connected than they look — a headcount miscount can trigger both a compliance violation and a bookkeeping headache. Beancount.io provides plain-text accounting that gives you complete transparency and version-controlled history over your financial data, so tracking the real cost of coverage, overtime, and leave-related expenses doesn't require reconciling three different tools. Get started for free and see why developers and finance professionals are switching to plain-text accounting.