William Grimes/WikipediaUnions probably fought the
passage of Michigan’s right-to-work law earlier this year
specifically to avoid situations like this.
Via the Grand Rapids Press:

Gary Frost of Grand Rapids informed Teamsters Local 406
that he wanted to revoke his dues deduction, and opt out of union
dues under new right-to-work laws.

Frost was told by union officials he would have to wait for a
“union-designated ‘window period’” before he could stop paying
dues, the National Right to Work Legal Defense Foundation said in a
statement.

The union hasn’t provided Frost with a copy of his dues deduction
authorization or told him when the “window period” will expire, the
foundation said.

Frost filed an unfair labor practice charge against the union with
the National Labor Relations Board. The foundation is providing
free legal assistance.

The Teamsters’ bargaining agreement (a right!) with UPS expired
in August, opening the door for Frost to opt-out of paying dues, if
not the “window.”

Michigan
became the 24^th state to enact a right-to-work law
last December. Unlike some other states, Michigan’s law preserved
the privilege of collective bargaining for private and public
sector unions. It did, however, ban the “closed shop,” which allows
union membership to be a condition of employment in some
workplaces.

Shikha Dalmia made the libertarian case for right-to-work laws,
which seek to alleviate the burden placed by the federal government
in the Wagner Act,
here. More Reason right-to-work laws here.