You need a Sheriff's card to work on the gaming floor. Convicted felons are going to find it hard to pass the background check. Keep trying, and you will find something.
Each casino has different requirements but usually a sheriff card is needed. I would encourage you to try. But to be honest the conviction for "fraud" does not help you to get into the casino industry. Casinos usually avoid individuals with such felony charges. Remember that your case can be sealed once the allocated time has elapsed. It may be best to seal and then start applying. Depending on the charge and the negotiation entered into, the time that has to elapse is different.
The answer above is only based upon the limited information provided. The answer is limited and my review is likewise limited, and thus the response is not intended to be acted upon as legal advice. Although licensed in numerous states, I am currently only licensed to practice law in the state of Nevada. No attorney-client relationship is formed until you sign an attorney-client agreement with my office. Any information provided is for discussion purposes only and there is no attorney-client relationship formed. Only general legal information is provided. Each case is unique and accurate legal advise would require review of all details and documents for each specific case. It is possible that the comments here, while meant to be helpful, may in some cases not be complete or accurate.
Casinos has the choice on who to hire. So the answer is they may hire a convicted felon. However, a fraud conviction increases your uphill battle since casinos abide by strict rules and deal with money etc. The casino may have a internal policy not to hire convicted felons or more specifically convicted felons for fraud. Perhaps you could seek an alternative and see a criminal attorney to potentially get your records sealed.