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Missouri’s new Paid Sick and Safe Time Leave (PSL) law—approved by voters in November 2024 through Proposition A—is still scheduled to take effect on May 1, 2025.
That means employers must prepare now by updating leave policies and meeting posting requirements by April 15, as required by law, even as legal and legislative challenges continue.
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Two separate efforts could ultimately change or invalidate the law—either before or after its effective date.
A lawsuit currently before the Missouri Supreme Court challenges the validity of Proposition A. Oral arguments were heard on March 12, 2025, and a decision is expected before May 1.
The legal challenge claims the measure violates several provisions of the Missouri Constitution, including:
Proposition A combines minimum wage increases with paid sick leave in one ballot measure.
The title allegedly does not express a single subject clearly.
The language voters saw is argued to be unfair or insufficient.
The economic impact may have been misrepresented.
The law treats certain employers and workers differently without clear justification.
If the Court agrees with any of these claims, the law could be invalidated—at least temporarily—until revised and reapproved.
If the Court upholds the language, the law will continue as planned.
On March 13, 2025, the Missouri House of Representatives passed legislation to repeal the paid sick leave provisions of Proposition A and modify the minimum wage increases. The bill is now in the Missouri Senate, where it was referred to the Committee on Fiscal Oversight on March 27.
Until or unless the law is overturned, PSL remains the law of Missouri—and employers are required to comply by May 1. That includes:
Axcet HR Solutions is closely monitoring both the legal and legislative developments. We’ll continue to provide timely updates—but for now, employers should stay the course and prepare to comply by May 1.
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