When can we terminate during medical leave?

Q. We have an employee who has been on workers’ comp for nine months. He’s not planning to have his fractured ankle operated on. HR wants to terminate him on the grounds that (after the operation) he will have been on FMLA for over a year. We realize the employee would still be carried by our insurer. Can we legally terminate an employee on workers’ comp after a year’s medical leave? — Vincent, Louisiana