The efforts mark the latest attempt by legislators to alter laws backed by the voters they represent. In February, for example, Michigan enacted revisions to a paid sick leave law initiated by voters seven years ago, delaying the date when small businesses must comply and allowing a longer period before new employees are eligible.

A coalition of business groups and individuals sued to strike down Proposition A, which Missouri voters passed in November. The new law raising the minimum wage and expands paid sick leave is set to take effect Thursday.

The state Supreme Court has ruled today that the wording and cost projections in Proposition A are not misleading or inaccurate. Business groups challenging the minimum wage and paid sick leave law made those arguments,