The earned paid sick time provisions of Proposition A are set to take effect on May 1, 2025. Missouri Proposition A requires employers to provide employees working in Missouri at least 1 hour of sick leave for every 30 hours worked and allows carryover of up to 80 of such hours per year. The law applies to almost all Missouri employees, including full-time, part-time and temporary with limited exceptions. For more details on the requirements and background of this paid sick leave law, see our prior blog posts on Missouri Proposition A requirements here and litigation challenge here.

While ongoing litigation and legislative efforts seek to delay or modify certain aspects of the law, these initiatives are unlikely to affect the start date or the notice period required by the statute. Therefore, it is essential for employers to begin preparing for the implementation of the law to ensure compliance with the statutory requirements, including the mandatory notice and poster provisions.

Notice and Poster Requirements

Written Notice to Employees

Employers are required to provide written notice of the earned paid sick time policy to all employees by April 15, 2025. The notice must be provided on a single sheet of paper, using a font size no smaller than 14-point. This notice should be distributed along with the employer’s updated written policy.

The Missouri Department of Labor & Industrial Relations has provided a standardized notice for employers.

Poster Display Requirement

In addition to the written notice, Proposition A mandates that employers display a poster detailing the earned paid sick time policy in a “conspicuous and accessible place” at each workplace. This poster must be displayed starting April 15, 2025. The Missouri Department of Labor & Industrial Relations has also provided a poster for this purpose.

Litigation Update

On March 12, 2025, the Missouri Supreme Court heard oral arguments in a case brought by various business groups and associations challenging the constitutionality of Proposition A. The plaintiffs argue that the Proposition is unconstitutional due to its inclusion of both minimum wage and paid sick time issues on the same ballot.

While the Supreme Court has not yet issued a ruling, it typically takes between 100 and 200 days for the Court to render an opinion. Although the outcome of the case may ultimately affect certain provisions of the law, employers should continue preparing for the implementation of Proposition A as currently written, effective May 1, 2025.

Legislative Update

On March 13, 2025, House Bill 567 passed in the Missouri House of Representatives. This bill seeks to repeal the paid sick leave provisions of Proposition A, delay the scheduled minimum wage increase, and eliminate the annual adjustments to the minimum wage based on the price index. The bill cleared a public hearing in the Senate on March 26, and an executive session will be held on April 7.

If the bill passes the Senate and is signed into law by the Governor, it will not take effect until August 28, 2025. As a result, Proposition A will remain in effect beginning May 1, 2025, and employers should prepare for the law to be implemented as currently written.

Resources and Support

The Missouri Department of Labor & Industrial Relations has developed an overview and frequently asked questions (FAQ) section on its website to assist employers in understanding the requirements of Proposition A and the earned paid sick time benefits.

Missouri employers need to review and likely need to update their existing policies regarding sick time and/or paid time off to comply with Missouri paid sick leave requirements.