About 55,000 union workers in Los Angeles County are getting ready to go on strike tonight. The strike is expected to start at 7 p.m. and last through 6:59 p.m. on Wednesday night. LA County says it’s anticipating its libraries to operate with reduced resources and at some locations, it’s possible the library will be closed altogether.

The union cites at least 44 alleged labor law violations during this contract bargaining cycle and claims the county has repeatedly violated labor laws.