Working at Bug-Tracker means you're on-call. Majority of the time, they will call you the evening before to let you know if you are working the next day. Therefore some may find it difficult to make plans during the week. It is a system that should be improved, because they have a high turn-over rate. If they send you to work for a client, you usually work 40 hours a week. The basis on how they choose who to call for a project is a bit sketchy, they say it is based on performance.