I see. I'm sorry to hear that. First of all, you need to understand that NJ is an "at will" employment state. At-will employment means that without a contract, you have no contractual or other right to employment with the company. The company is entitled to fire you for any reason: a good reason, a poor reason, or no reason at all--as long as the company does not fire you for an illegal reason (race, gender, age, religion, etc...). But it extends beyond firing, to hiring, promotions, demotions, wage cuts and raises, disciplinary actions, and even scheduling. Unless you can show that this was done in violation of a contract, union agreement, or a clear violation of an unambiguous and binding clause against the employer, or that it was done because of some minority status (age, race, gender, religion, disability) that you have, then they do have this discretion.
Now "discrimination" is simply treating similarly situated individuals differently. Discrimination in employment is not necessarily illegal. Only illegal discrimination is illegal (that being discrimination based on race, age, religion, gender, or disability). Otherwise, your employer can take such action against you, even IF it's based upon a dubious, incorrect, or spurious reason as was given. Now you could still potentially seek unemployment benefits, etc... but at-will employment still controls, and unless you can prove the specific discrimination based on race, age, religion, gender or disability, I'm sorry to say that yoyu wouldn't have a case.
I know this is probably not what you wanted to hear, but it is the law. I hope that clears things up anyway. If you have any other questions, please let me know. If not, and you have not yet, please rate my answer AND press the "submit" button, if applicable.
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Thank you, ***** ***** luck to you!