Our company is in CALIFORNIA and the workweek starts on Saturday. Hourly employees worked on Saturday to complete an order. Monday, Tuesday, Wednesday were 8 hour days. Late on Wednesday, after the shift ended, management decided that the work load was not sufficient and critical enough to have normal work hours on Thursday and Friday. Hourly employees were called and told not to come in for those two days. They could use either vacation hours or choose to not be paid. As a result, the Saturday work which was expected to be overtime, became normal work hours. They were paid for 4 days normal pay rate unless they used vacation time on Thursday and Friday.
While unfortunate, I want to be sure that this is within CALIFORNIA LABOR LAW.

