I have worked for a San Diego based company who have a branch in MA for nearly five years, part-time, and recently full-time. I was informed that, before I can be regarded as a full-time employee, I must complete a six-month probationary period (despite the company having known me since 2007). The six months are up, and I have just been informed that I will not be receiving the expected health insurance benefits because I had taken leave during the probationary period. No-one informed me of this problem at the time the leave dates were agreed. The company have a history of underpaying and lying to their employees.
Do I have a case? Where should I begin? I can't quit immediately, and the threat of doing so would make no difference to the company (they'd prefer new, inexperienced staff to veterans who cause trouble).
I would appreciate any advice you can offer.