EIA tells how unions bully people who want out:
A union can require that a member who wishes to resign must do so in person at the union hall, provide a written letter of intent, and show photo ID, thanks to a ruling this week from the National Labor Relations Board.Think the NCLB would accept that argument? I don't either.
This is clearly a measure to discourage people from leaving the union. I expect many direct challenges to this policy, but I suggest a flanking maneuver instead.
When the union wants its dues money every two weeks, tell them that a union officer must ask for it in person at your workplace, provide a written invoice, and show photo ID.
If the procedure isn’t a burden for you, it shouldn’t be a burden for them either.