I am a little confused about your question. In the beginning sentence you indicate that you signed a form that says its not a contract. If you signed a contract that says it is not a contract then you do not have a contract. They can change your compensation plan but not regarding earned compensation. I would contact the Michigan Dept. of Wage and hour to see if they can help. (517)322-1825
Each employment situation has unique facts and circumstances. This means that information and advice cannot be taken literally and should be used as only informational. The information provided here is not legal advice and should not be interpreted as such.
I would consult an attorney in your area that specializes in employment law. He/she will be able to explain your wage and/or contract rights to you. Whether or not you are Christian should not factor in to how you are paid pursuant to applicable state laws.