A paycheck of a decedent belongs to the Decedents estate. Florida Employers should not cancel nor refuse to issue paychecks for employees who die. Florida Employers should follow their normal procedures. If no one checks on the status of the paycheck, it would be a good idea to send notice to their address that the check is being held for their estate. This gets more complicated with direct deposit where the funds could go to the wrong person. The decedent could have a joint account with someone who was not the same person who would take under the will.
If you have questions about receiving or what to do with the earned but unpaid income of a decedent in Florida you should contact a Florida Estate Planning Lawyer who is familiar with Florida Business Law.