2026 HR Compliance Guide

Illinois HR Compliance Deadlines for 2026

2 verified employment law changes affecting Illinois employers in 2026 — with effective dates, required actions, and penalties for non-compliance. Every entry cites an official government or agency source.

Illinois state law changes

January 1, 2026·AI & Hiringcritical

Illinois AI in Hiring Law HB 3773

Illinois HB 3773 amends the Illinois Human Rights Act to regulate the use of artificial intelligence in employment decisions, effective January 1, 2026. Employers using AI tools for recruitment, hiring, promotion, or discharge must provide notice to applicants and employees, conduct bias audits, and ensure the tools do not discriminate based on protected classes. The law also restricts the use of zip code as a proxy for protected characteristics.

Applies to: All Illinois employers using AI in employment decisions

What to do: Inventory all AI tools used in hiring and employment decisions, conduct or commission bias audits of AI systems, implement applicant and employee notification procedures, and establish documentation protocols for AI tool usage and audit results.

Penalty: Civil rights violations, fines, lawsuits, and enforcement by the Illinois Department of Human Rights

Source: ADP Eye on Washington
January 1, 2026·Worker Protectionhigh

Illinois Worker Freedom of Speech Act

The Illinois Worker Freedom of Speech Act takes effect January 1, 2026, prohibiting employers from requiring employees to attend employer-sponsored meetings about the employer's opinions on political or religious matters as a condition of employment. Employers cannot discipline, discharge, or threaten employees who refuse to attend such meetings. The law includes narrow exceptions for religious organizations and certain educational institutions.

Applies to: All Illinois employers (with limited exceptions for religious organizations)

What to do: Review and discontinue any mandatory meeting policies that involve political or religious communications, update employee handbooks and policies, train managers on prohibited conduct, and establish voluntary-only attendance protocols for any such meetings.

Penalty: Civil penalties, employee lawsuits, reinstatement, back pay, and compensatory damages

Source: ADP Eye on Washington

Federal deadlines that also apply

These federal requirements apply to Illinois employers alongside the state rules above.

February 1, 2026OSHA Form 300A Annual Posting Period Begins
February 2, 20261099-NEC Filing Deadline
February 2, 2026W-2 Filing Deadline with SSA
February 2, 2026Form 940 (FUTA) Annual Return Due
February 2, 2026Q4 2025 Form 941 Filing Deadline
February 10, 2026FUTA Form 940 Extended Filing Deadline
February 17, 2026Form W-4 Exempt-Status Renewal Deadline
March 2, 2026ACA 1095-C Employee Copies Due
March 2, 2026OSHA ITA Electronic Submission Deadline
March 2, 2026ACA Forms 1094-C/1095-C Paper Filing Deadline
March 2, 2026ACA 1095-C Furnishing: Notice-of-Availability Option (Paperwork Burden Reduction Act)
March 31, 2026ACA Electronic Filing Deadline (Forms 1094-C/1095-C)
April 30, 2026Q1 2026 Form 941 Filing Deadline
April 30, 2026OSHA Form 300A Posting Period Ends
May 1, 2026EEO-1 Component 1 Filing Period Opens
June 7, 2026EU Pay Transparency Directive Transposition Deadline
June 24, 2026EEO-1 Report Filing Deadline (Estimated)
July 31, 2026Q2 2026 Form 941 Filing Deadline
July 31, 2026Form 5500 Annual Report Due (Calendar-Year Plans)
September 30, 2026VETS-4212 Federal Contractor Report Due
October 15, 2026ACA Marketplace Open Enrollment Preparation
October 15, 2026ACA 1095-C Notice of Availability — Posting Period Ends
October 31, 2026Q3 2026 Form 941 Filing Deadline
November 1, 2026ACA Marketplace Open Enrollment Begins
December 15, 2026ACA Marketplace Open Enrollment Deadline
December 31, 2026Year-End Payroll Tax Reconciliation
December 31, 2026Annual Benefits Enrollment Close for Calendar-Year Plans

Stay compliant — and turn it into recertification credits

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