Illinois Paid Sick Leave Explained: Accrual, Caps and the Chicago Split

Illinois is one of only three states where the statewide entitlement is not sick leave at all. The Paid Leave for All Workers Act, 820 ILCS 192, gives an employee 40 hours a year to use for any reason, and forbids the employer from asking what the reason is. Maine and Nevada are the other two. Everywhere else in the country the leave is tied to illness, caregiving or safety, and the employer may ask.

That difference decides how an Illinois policy has to be written. There is no qualifying-reason list, no documentation threshold and no medical certification clause, because none of them are lawful here. What the policy does need is a 12-month period definition, a notice rule, a minimum increment and a decision between accrual and front-loading.

How the 40 hours accrue

Accrual runs at one hour for every 40 hours worked, which is the slowest of the three 40-hour denominators in the country and half the speed of the one-hour-per-30 rate most mandate states use. A full-time employee on a 40-hour week reaches the annual 40-hour cap after roughly 1,600 hours, so the balance fills over most of a working year rather than in the first quarter.

Accrual begins on the first day of employment or on the Act's effective date, whichever is later, but the employer may hold use back until the employee has completed 90 days. Those are two separate clocks and payroll has to run both: the balance is building while the right to spend it has not yet opened. An employer that starts the accrual clock on day 91 has underpaid the balance by up to 90 days of hours, which surfaces the first time somebody audits a terminated employee's record.

The alternative is front-loading. Grant the full 40 hours at the start of the 12-month period and the accrual tracking disappears, and so does the carryover obligation. It costs more in the first year for a workforce with turnover, and it is the option most employers with sites in several states choose, because a front-loaded grant behaves the same way in every jurisdiction and an accrual rate does not.

Notice, increments and the reason you cannot ask for

An employer may require up to seven calendar days of notice where the need for leave is foreseeable, and notice as soon as practicable where it is not. It may also set a minimum increment of use, capped by statute, so an employee cannot draw the balance down in ten-minute pieces. What it may not do is condition the leave on an explanation, a doctor's note or a manager's approval of the purpose.

In practice that turns the Illinois policy into a scheduling document rather than a medical one. The enforceable controls are the notice window and the increment. Everything a handbook would normally say about acceptable reasons has to come out, and a manager who asks anyway has created the violation personally.

Chicago and Cook County: three rules in one state

Where a local paid leave ordinance was already in force, the state Act gives way to it. That leaves an Illinois employer with three possible answers depending on the work address.

• Chicago. The Paid Leave and Paid Sick and Safe Leave Ordinance runs two separate banks, 40 hours of paid leave and 40 hours of paid sick leave, 80 hours in total, each accruing at one hour for every 35 hours worked. Carryover rules and separation payout for the paid leave bank differ between the two, so a single combined PTO bucket does not satisfy it. Details are published by the Chicago Office of Labor Standards.
• Suburban Cook County. The county Paid Leave Ordinance runs a 40-hour entitlement, administered by the Cook County Commission on Human Rights. Municipalities inside the county have the power to opt out, so coverage is decided municipality by municipality rather than by the county line.
• The rest of Illinois. The state Act applies, at 40 hours and one hour per 40 worked.

An employer with a Loop office, a warehouse in a suburban Cook municipality and a plant downstate is running all three at once. This is the concrete case for storing the leave rule against the work location rather than the employer, and it is why HR outsourcing in Illinois is mostly an exercise in keeping three accrual configurations straight rather than one.

Where Illinois employers get caught

• Folding the hours into an existing PTO bank. Legal, and it changes the payout treatment. Once the hours are general PTO, the Illinois Wage Payment and Collection Act rules on unused vacation come with them.
• Keeping a reason field on the request form. Collecting it is the problem, whether or not anyone acts on it.
• Assuming Chicago is covered by the state Act. It is not, and the Chicago entitlement is double the state one.
• Starting accrual at the 90-day mark. The waiting period governs use, not accrual.
• Losing the records. The Act carries a record-keeping duty measured in years, and an employer that cannot produce the accrual history loses the argument by default.

Frequently Asked Questions

Sources: Illinois Department of Labor, Paid Leave for All Workers Act; Chicago Office of Labor Standards; Cook County Commission on Human Rights. Compare every state on paid sick leave by state. General leave information, not legal advice.