Pay Transparency in Illinois Starts on January 1, 2025 By Kevin Kleine & Julie A. Proscia October 15, 2024 Email this postTweet this postLike this postShare this post on LinkedIn Pay transparency laws are regulations that require employers to disclose salary information. Illinois’s pay transparency law (HB 3129), as well as similar laws in states including Minnesota and Vermont, take effect on January 1, 2025.