Illinois HR investigation requirements, end to end.
Illinois HR investigation requirements start with a state route that is broader than a federal-only checklist: the Illinois Human Rights Act and IDHR charge process, annual sexual-harassment prevention training and records, paid-leave rights under PLAWA, and IWPCA wage and final-compensation timing. Chicago and Cook County can add another leave layer. HR teams need a workspace that captures the worksite and worker context at intake, keeps each legal clock qualified, and preserves the review record before any employment action. See the four-step flow › Corestride ER keeps the Illinois context beside the draft and routes application through HR review and counsel. See pricing ›
Illinois playbook
What Illinois requires beyond the federal baseline.
These are the review lanes to surface early. They describe high-level compliance context for an HR workflow, not a legal conclusion or a deadline calculated for a particular employee. Check current agency guidance before relying on a statutory detail, especially where a local ordinance or effective-date change may apply.
IHRA discrimination, harassment, and retaliation route
The Illinois Human Rights Act (IHRA) covers employment discrimination, harassment, retaliation, and related protected-class concerns. The Illinois Department of Human Rights (IDHR) is the intake and investigative agency for a charge; most non-housing employment charges must be filed no later than two years after the alleged discrimination under current IDHR guidance. That is a route-specific outside deadline, not a date to calculate for a particular employee. Preserve the complaint, witnesses, documents, and response chronology, then route the application to HR review and counsel.
Annual sexual-harassment prevention training
Illinois employers must provide sexual-harassment prevention training to employees by December 31 of each calendar year under the IHRA. IDHR guidance says the requirement reaches employees regardless of status, including part-time employees and interns, while independent-contractor treatment and industry-specific rules can differ. Restaurants and bars have supplemental training and policy requirements. Keep the training date, audience, content, delivery evidence, and acknowledgement or completion record together; training records must be available for IDHR review.
Paid Leave for All Workers Act
The Illinois Paid Leave for All Workers Act (PLAWA) generally provides at least one hour of paid leave for every 40 hours worked, up to the applicable annual use limit, for any reason. Employees generally become eligible to use accrued leave after the applicable 90-day waiting period. A written policy may set reasonable notice procedures, and the Act prohibits retaliation for exercising protected leave rights. Coverage, front-loading, carryover, collective-bargaining terms, and worker or employer exceptions need a fact-specific check against current Illinois Department of Labor guidance.
Chicago and Cook County overlays
Illinois coverage is not the end of the leave analysis. The City of Chicago and Cook County maintain separate paid-leave ordinances with their own coverage tests, accrual or front-load options, notice rules, carryover, payout, enforcement, and exceptions. Cook County’s ordinance generally excludes Chicago because Chicago has its own regime, while some municipalities and public or collectively bargained workplaces follow different rules. Capture the work location and employer structure at intake before treating PLAWA as the controlling leave rule.
Wage payment and final compensation
The Illinois Wage Payment and Collection Act (IWPCA) generally requires wages to be paid at least semi-monthly and no later than 13 days after the close of the pay period in which they were earned, with different rules for some exempt categories. On separation, final compensation — which can include earned wages, commissions, bonuses, and qualifying vacation pay — is due in full at separation if possible and in no event later than the next regularly scheduled payday (IWPCA §§3 and 5). A wage or final-compensation complaint to IDOL generally uses a one-year window under §11, subject to the route and facts.
Side-by-side baseline
Illinois vs. the federal baseline.
A compact comparison for HR review. Federal discrimination, wage, and leave rules are separate baselines; the table keeps them qualified beside the Illinois Human Rights Act, IDHR, PLAWA, and IWPCA context.
| Topic | Federal baseline | Illinois |
|---|---|---|
| Discrimination / harassment charge timing | Generally 180 days with the EEOC, extended to 300 days where a state or local deferral agency applies; claim-specific rules can differ. | Most non-housing IHRA charges with IDHR: no later than 2 years after the alleged discrimination (IDHR guidance; effective January 1, 2025). |
| Annual harassment training + records | No generally applicable private-employer annual sexual-harassment training cadence or single federal recordkeeping cadence. | Annual sexual-harassment prevention training by December 31; employers keep training records available for IDHR review. Some worker and industry rules differ. |
| Paid leave | No general private-sector federal paid-leave mandate; FMLA provides unpaid, job-protected leave for eligible workers and covered employers. | PLAWA generally accrues at 1 hour per 40 hours worked, for use for any reason after the applicable waiting period; notice, exceptions, and local overlays require review. |
| Pay / final-compensation timing | FLSA sets minimum wage and overtime standards but does not establish a universal payday or final-pay deadline. | Wages are generally paid at least semi-monthly; final compensation is due by the next regular payday under IWPCA §5, if not paid at separation. |
| Wage-claim timing | FLSA claims generally use a 2-year limitations period, or 3 years for willful violations; the route and claim can change the analysis. | An IDOL wage or final-compensation complaint is generally due within 1 year after the wages or compensation were due (IWPCA §11). |
Corestride ER
How Corestride ER handles the Illinois lane.
The People’s Approach runs every matter through the same ordered sequence, while the Illinois lane surfaces the IDHR, training, leave, local-overlay, and wage levers that need explicit HR review. See the four-step flow › The case dossier keeps state context beside the draft instead of asking HR to reconstruct it from separate notes. See pricing ›
Jurisdiction-aware intake
The intake captures Illinois, Chicago, Cook County, work location, worker category, and the matter type as structured context. The case URL carries that context into the draft and HR review log.
IDHR deadline callout
The dossier keeps the current two-year IDHR charge guidance separate from federal EEOC timing and from the one-year IWPCA wage-complaint window, so the draft does not collapse distinct routes into one clock.
Training-record checkpoint
Annual training date, audience, materials, completion evidence, and any restaurant or bar supplemental requirement stay together as an HR-review artifact that can be retrieved if IDHR asks for records.
Leave-overlay review
The workspace flags the worksite for PLAWA, Chicago, or Cook County review and leaves coverage, notice, carryover, and exceptions visible before an attendance or leave-related action is drafted.
Final-pay timing callout
An Illinois wage matter keeps semi-monthly payroll, next-regular-payday final compensation, and the IWPCA complaint route in the same case record for HR and payroll review.
Second-reviewer signoff gate
Illinois matters route protected-class framing, retaliation concerns, leave or wage issues, and any severance or release language through a second reviewer before an employment-action deliverable leaves the workspace.
Buyer questions
Illinois questions buyers ask most.
The practical questions HR directors ask when an Illinois matter moves from intake to review. Read the broader FAQ ›
- 01
Is the Illinois two-year deadline the deadline for every workplace issue?
No. The current IDHR two-year guidance applies to most non-housing discrimination, harassment, and retaliation charges under the IHRA. Federal EEOC charges, wage claims, local ordinances, contract claims, and other routes can have different deadlines and prerequisites. Corestride ER preserves the alleged conduct and response timeline; HR and counsel decide which route controls.
read the full FAQ - 02
What should Illinois employers keep after annual training?
Keep the training date, attendees or audience, program content, delivery method, and completion or acknowledgement evidence in one retrievable record. IDHR guidance requires employers to keep training records available for review. The record should also note whether a restaurant, bar, or other special rule requires supplemental content.
read the full FAQ - 03
How should a leave-related investigation handle Chicago or Cook County?
Start with the employee’s actual work location and the employer’s coverage facts. Chicago and Cook County have separate paid-leave ordinances, and the applicable rules can differ from PLAWA on accrual, notice, carryover, payout, and exceptions. Keep the issue framed as a coverage and retaliation review, not as a one-size-fits-all leave conclusion.
read the full FAQ - 04
Does Corestride ER replace Illinois employment counsel?
No. Corestride ER organizes the Illinois-aware intake, draft, compliance callouts, and HR review log. Employment counsel still owns legal application, including which IHRA, leave, wage, or local-ordinance route applies and whether a proposed employment action is supportable.
read the full FAQ
Drafts are starting points for HR review. Severance and release language routes through employment counsel; protected-class framing and FMLA-adjacent context get a second reviewer before any employment action.
Walk an Illinois case today.
Six intake fields, jurisdiction-aware draft, inline compliance flags. The first case is on us.