If a job offers flextime, that's a good thing right? You can take off to make that doctor's appointment or catch your kid's soccer game. But in many low-wage jobs - particularly retail or hourly jobs - workers there face what could be called involuntary flextime. Schedules are posted only a few days in advance. Shifts may change. Work is unpredictable. That makes arranging childcare, taking classes or working a second job very difficult.