Little Big Burger in Portland, Oregon has fired an employee following a strike. According the union, workers walked out in response to unsafe workplace conditions and understaffing. The day after the workers walked out they were suspended by management, and then one of them (a union member) was fired. The Little Big Union has stated that the fired employee had no past history of misconduct and was given no reason for her termination.
See "Little Big Burger Employee Fired After Strike", Brooke Jackson-Glidden, Eater Portland, May 8, 2019