The law itself does not necessarily require notice that a contract is not being renewed. Whether or not the employer had to provide you notice therefore depends on the terms of the contract itself. What did it say about the timing of nonrenewal, grounds for nonrenewal, notice required for nonrenewal, how to nonrenew, etc. Whatever terms in the contract applied (if any), they will be enforced. If there was a breach of a contractual term relating to notice and/or nonrenewal, you can enforce that term; you might possibly, for example, have grounds for reinstate or at least for monetary damages. However, if there was nothing in the contract itself requiring notice or otherwise governing this situation, you probably do not have any recourse, unfortunately. Good luck.