One favored the families of three men killed when a giant crane collapsed during construction of Miller Park; another struck down the cap on medical malpractice damages for pain and suffering, and the third expanded the liability of paint manufacturers in cases of lead poisoning.

"[5] According to the Wisconsin Government Accountability Board, WMC was responsible for 1.1 million dollars in lobbying efforts during the 2007-2009 session of the state legislature.

[18] WMC works with the state Department of Workforce Development to secure federal grants to train workers in Wisconsin.

[19] In 1989, WMC helped block passage of Wisconsin's family leave act on behalf of their members.

[20] In July 2024, WMC signed a letter to members of both the House Committee on Armed Services and the Senate Committee on Armed Services opposing Section 828 of S. 4628, the National Defense Authorization Act for Fiscal Year 2025, entitled "Requirement for Contractors to Provide Reasonable Access to Repair Materials," which would require contractors doing business with the US military to agree "to provide the Department of Defense fair and reasonable access to all the repair materials, including parts, tools, and information, used by the manufacturer or provider or their authorized partners to diagnose, maintain, or repair the good or service.

"[21] In August 2008 the outgoing Chancellor of UW-Madison, John Wiley, described the WMC as being "hijacked by highly partisan ideologically driven staff," stating that "WMC routinely opposes most measures favored by labor unions, and most measures aimed at improving the lot of entry-level and low-income workers who are essential to our economy.