OK, looking at OT only the question is WHY they did not pay overtime? FLSA (the big federal labor law) is pretty much exceptions-R-us. There are something like a 100 OT exceptions in the FLSA. We need to find out if your employer has good reason for their actions.
- What are your actual job duties? And what is your industry? And are you somehow working for the government. Any government.
You previously mentioned Hourly like it means something. It does not, not by itself anyhow. Hourly is a payment method, an "effect", not a "cause". The starting point is always the job duties and the nature of the employer. These determine which OT exceptions, if any, are applicable. The exact exception, if applicable, may or may not require specific payment methods. The payment method is the tail, not the dog.

