Legal Question in Employment Law in New York

You can hold them to your employment contract.

I am assuming the sick leave is set forth in an employee's manual or other written document.

It may be necessary to file a wage claim in your local court.

In examining this response, please note that we are not entering into an attorney/client relationship, that this is to be taken as informative, and not as legal advice, that it is always best to speak to a lawyer in your area and/or in the area where the transaction and/or events occurred, and that my answer is necessarily limited by the fact that I have not seen the documentation or had an opportunity to go over the matters with you in detail.