Workers in Michigan participate in national efforts to seek higher wages from fast-food chains

Michigan workers are participating in a national demonstration to push fast-food chains to pay their employees at least $15 an hour.

About two-dozen people protested at a gas station in Detroit on Wednesday night. Organizers say a worker at the station walked off the job, forcing the business to temporarily close.

A crowd rallied Thursday morning at a McDonald's in the Detroit enclave of Highland Park. Similar actions are planned elsewhere around the U.S.

The protests are part of a campaign called "Fight for $15," which has included several rounds of actions. Since the efforts began in late 2012, organizers have switched up their tactics every few months to bring attention to the protests.

Restaurant industry officials have said the protests are an attempt by unions to boost membership.

Clickondetroit.com