Whether or not your husband's employer can cancel legally his medical insurance benefits depends upon what is stated in his contract with the employer or the standing employee handbook. From what you have written, it seems that there is some discriminatory practices against your husband by the employer where the employer is targeting him for termination by being discriminatory.I recommend that your husband consult with a labor attorney or a representative of the local labor department. They key is whether the treatment he is receiving from his employer is different than what other employees are receiving.