Your manager sounds like an ass. Were you billing for more than 8 hours per day? If not, you should get him to put in writing that he is asking you to work a 10 hour plus day and only pay you for 8. Furthermore, they hired mostly moms for this job, since most that aren't wouldn't want part time. It's just not feasible to go to your storage unit between 7 and 8. This is when most are dropping off children to school or daycare. If I went to my storage unit at 7, my clock would start at that time. I would be heading back to return samples by about 1pm or 2. Drive home, synch, email, done. That's 8 hours