Illinois Pay Transparency Law: 2025 Job Posting Rules
Illinois joined the posted-range states with its Equal Pay Act amendment. Here's what employers must disclose.
Rovaryn Digital · June 11, 2026
The Friday Posting Problem — Now With a $10,000 Penalty Attached
Your recruiting team slots a new software developer role into your ATS at 4:45 p.m. on a Thursday. The job goes live on Indeed and LinkedIn at midnight. By Friday morning, a candidate in Chicago is reading it — and your legal counsel, who didn't see a draft, is asking one question: Where's the pay range?
Illinois employers have been in that situation since January 1, 2025. Under HB 3129, which amends the Illinois Equal Pay Act of 2003, employers with 15 or more employees must include a pay scale and benefits description in every job posting. Miss it once and the penalty is $500. Miss it again, it's $2,500. A third violation costs $10,000 — per posting (Illinois DOL, 2025; MMR Ltd. citing HB 3129, 2025).
This guide explains exactly what the Illinois pay transparency law requires, what a "good faith" pay scale looks like, how long you need to keep records, and what to do before the next role goes live.
By the end, you will know what your Illinois job postings must include, what to document, and how to build a pay range that holds up to scrutiny.
What the Illinois Equal Pay Act Amendment Actually Requires
HB 3129 amended the Illinois Equal Pay Act of 2003. The core obligation: any employer with 15 or more employees that posts a job opening — whether internal or external, whether the role is based in Illinois or remote but accessible to Illinois applicants — must include both a pay scale and a benefits description in the posting (Illinois DOL, 2025).
Two definitions matter here.
Pay scale means the salary or hourly wage range the employer is willing to offer. It does not have to be a single number, but it must be a genuine range — not a placeholder like "competitive" or "DOE." The law uses the phrase good faith estimate, which matters: the range has to reflect what the employer actually intends to pay, grounded in something more than a guess.
Benefits description goes beyond pay. Illinois requires employers to describe other compensation — bonuses, commissions, stock, tips — and general benefits such as health insurance, retirement plans, and paid leave. The description does not need to be exhaustive, but it must be present.
A posting that says only "$60,000–$75,000" and nothing else is not sufficient under Illinois law. A posting that says "$60,000–$75,000; eligible for annual performance bonus; medical, dental, and vision coverage; 401(k) with employer match; 15 days PTO" is much closer to compliant.
Always confirm the current scope and definitions with the Illinois Department of Labor (IDOL) or with employment counsel before acting — requirements can be updated by regulation or guidance after the statute takes effect.
The Penalty Ladder — and the 7-Day Cure Window
The Illinois pay transparency law structures penalties as a three-rung ladder (MMR Ltd. citing HB 3129, 2025; Illinois DOL, 2025):
| Violation | Civil Penalty |
|---|---|
| First violation | $500 |
| Second violation | $2,500 |
| Third and subsequent | $10,000 |
Each non-compliant posting is treated as a separate violation. A company that posts the same role on five job boards without a pay range is looking at five separate counts — not one.
The law does include a limited cure period: employers have seven calendar days to correct a deficient posting once they are notified of a violation. That window exists, but it is not a safe harbor for repeat failures — the escalating penalty structure makes clear that IDOL expects compliance to stick.
For context on how enforcement tends to evolve across transparency states, see our pay transparency penalties explained guide.
Record Retention: The Five-Year Clock Starts at Posting
One requirement that catches Illinois employers off guard: the obligation does not end when the posting comes down.
The Illinois Equal Pay Act amendment requires employers to retain the pay scale and benefit information for each position, and the actual posting itself, for five years (Greenberg Traurig / Illinois DOL, 2024). If IDOL investigates a complaint about a role you posted in 2025, you will need to produce the posting and the underlying wage data that supported the pay scale — not just a screenshot of what ran on Indeed.
That five-year retention requirement is why a well-documented methodology matters from the start. A range you can trace to a BLS OEWS percentile pull with a timestamp is a range you can defend in 2030. A range someone typed into the ATS based on what the last person made is a range you cannot reconstruct.
What Makes an Illinois Pay Scale "Good Faith"?
The law requires the pay scale to reflect a good faith estimate of what the employer intends to pay. Illinois IDOL has not yet published granular guidance on what methodology satisfies good faith (verify the current guidance at the IDOL website), but the standard points toward ranges that are:
Grounded in a recognized wage source. The BLS Occupational Employment and Wage Statistics (OEWS) program produces annual wage estimates for over 800 occupations across all 50 states, based on a sample of approximately 1.1 million establishments (BLS, May 2025). Illinois state-level OEWS data is available at bls.gov/oes. For example, the national median for software developers (SOC 15-1252) was $133,080 as of the BLS May 2024 reference period (BLS OOH, May 2024). The May 2025 OEWS national, state, and metro estimates were released on May 15, 2026 (BLS, 2026) — check bls.gov/oes for the current Illinois-specific figures.
Wide enough to reflect the role's real scope, but not artificially wide. A range spread — the percentage difference between the minimum and maximum of a band, expressed as a percentage of the midpoint — of 40–60% is common for individual-contributor roles; a spread beyond 80–100% suggests the employer has not actually decided what the job is worth. Note that Illinois does not cap the spread the way New Jersey's proposed regulations do, but a sprawling range invites questions about good faith.
Worked example (not a BLS-reported figure — illustrative arithmetic only): If an Illinois employer anchors on the BLS national median for accountants and auditors (SOC 13-2011) of $81,680 (BLS OOH, May 2024) and wants a 40% spread, the band would run roughly $69,428 (min) to $94,932 (max). The employer should then verify whether Illinois state-level wages for that occupation diverge from the national median — which they often do in metro markets like Chicago — by pulling the Illinois OEWS detail from bls.gov/oes.
Documented. The five-year retention rule makes documentation a legal artifact, not a nice-to-have. Your audit trail should show: the wage source, the reference year, the percentile anchors you used, and any geographic or internal-equity adjustments you applied.
For a step-by-step walk through the range-building process, see how to build a salary range.
Scope Questions Illinois Employers Are Asking
Does the law cover remote roles? The Illinois Equal Pay Act amendment applies to postings for jobs that will be performed, at least in part, in Illinois — and to remote roles that are open to Illinois applicants. If your "nationwide remote" posting could be filled by someone in Chicago, treat it as an Illinois posting. Confirm the current scope interpretation with IDOL or counsel.
Does the law cover promotions and internal transfers? The statute covers job postings broadly, which includes internal postings for promotions and lateral transfers. Employers with formal internal job boards should apply the same disclosure standard they use for external postings. Verify the current IDOL guidance on internal postings before finalizing your process.
What if we post through a staffing agency or an ATS integration? Responsibility for compliance rests with the employer, not the platform or the agency. If your ATS auto-distributes to aggregator sites, confirm that the pay scale and benefits language carries through to every distribution channel. A posting on a job board that strips the compensation block is still your compliance risk.
We have 14 employees now. Are we covered? The 15-employee threshold is based on employees in Illinois (Illinois DOL, 2025). If you hire a 15th employee at any point, the law applies to postings from that point forward. Track your headcount — the threshold is not fixed at a snapshot date.
For a broader look at how Illinois fits into the national landscape, the pay transparency laws by state guide tracks all active state mandates.
Building an Illinois-Compliant Posting Before the Role Goes Live
A compliant Illinois job posting has three visible components and one invisible one.
Visible:
- The pay scale — a genuine minimum-to-maximum range, not a floor-only or ceiling-only figure.
- Other compensation — bonuses, commissions, equity, tips, where applicable.
- Benefits description — health, retirement, PTO, and any other material benefits.
Invisible (but legally required for five years): 4. The documentation of methodology — what wage source you used, what reference year, what percentile anchors, and what adjustments.
The visible components go in the posting. The invisible component goes in your compensation file, where IDOL or your employment attorney can find it if needed.
For detail on what belongs in each section of a posting, see what to include in a salary range posting. For the full compliance toolkit — including Illinois-formatted posting templates and a five-year-retention log — the Pay Transparency Compliance Kit packages the documentation infrastructure alongside the range-building methodology.
Your Next Step: Document the Range Before the Posting Goes Live
The Illinois pay transparency law is not complicated in principle — post a real range, describe your benefits, keep the records. What makes it operationally hard is doing that consistently, at hiring-manager speed, for every role, across every job board, and then maintaining a five-year audit trail.
The Pay Transparency Compliance Kit includes Illinois-specific job posting templates, a methodology documentation worksheet built around BLS OEWS anchors, and a record-retention log that satisfies the five-year requirement. Download the kit, run the checklist against your next opening, and go live knowing the range is defensible.
For questions about how Salary Range Builder's software automates the BLS data pull, the range calculation, and the audit-ready PDF output, visit our pricing page or explore the pay transparency resource hub.
Always confirm the current Illinois Equal Pay Act requirements and any subsequent IDOL guidance with the Illinois Department of Labor (illinois.gov/agencies/idol) or qualified employment counsel before making compliance decisions. Pay transparency rules change; the figures and thresholds cited here reflect the law and sources available as of the dates noted.
Get new guides in your inbox
One email when a new article goes live. Unsubscribe with one click.
