Alright, I got hired about 4 weeks ago, and I'm pretty well trained, though I still need to get my technique down. Recently, I got a call from my manager on the way to work. She told me they wouldn't need me that day, and I didn't need to come into work. On my way home, she called back telling me that I could come to work, because someone didn't show up. Just yesterday, as I left work, she told me to call before work today. So, I called, and she told me that they're fully staffed, and it wasn't too busy, and I didn't need to come in to work. After the shift, I called to ask her if I was doing alright... She told me that this month just isn't very busy. She also said that everything is based on seniority, so when they're fully staffed, I'm the one who stays home. Is this normal procedure? I really like my job. Should I be worried about my employment, or do you think everything's fine? Thanks!