No. Missouri follows the "Employment-At-Will" Doctrine, which does not require any notice. State laws provide no requirement for notice from or for employers.

The state minimum wage rate in 2026 is $15.00 per hour. The Missouri Minimum Wage and Overtime Law, sections 290.500 to 290.530, RSMo, is enforced by the state. The Division of Labor Standards will investigate complaints of non-compliance of the state minimum wage law.

Section 290.502.2, RSMo, provides that the minimum wage shall be increased or decreased each year based on changes in the cost of living. On September 30 of each year, the Director of the Department of Labor and Industrial Relations is to determine the increase or decrease in the Consumer Price Index as published by the U.S. Department of Labor (from July of the previous year to July of the current year) and adjust the minimum wage accordingly (rounded to the nearest five cents). The minimum wage as adjusted will become effective on the following January 1.

Overtime is based on a 40 hour workweek, not an eight-hour day. Missouri′s Minimum Wage Law and the Federal Fair Labor Standards Act (FLSA) require most employers to pay their employees one and one-half times their regular rate of wages for hours over 40 in a workweek (See RSMo Chapter 290.505).