Can an employer dock my wages for a mistake?

I work for a hotel in Florida and recently had a guest check out without staying. He claimed that the bed was uncomfortable, there was mold, and that I made him uncomfortable. The owner refunded the money to the guest, but only after refusing several times. Now he wants to dock my pay for the amount refunded. I am an hourly wage worker and cannot afford this kind of deduction. - Is this your question? Add additional information