I am working part time as package handler for ground pm shift. I retired from express after 21 years was going to do casual for express , but it is no longer avail. I only looking to keep busy for a few hours a week, however I have been only getting 1.5 to 2 hours a night. is mgmt. worried about my age (60) but in good shape and don't really want me there ? is there a min hours rule if I show up ?