Q. We have an employee returning from FMLA leave. His physician issued a fitness-for-duty certificate, but we question the worker’s ability to perform his old job because the length of his absence was too short for him to recover completely. Further, the fitness-for-duty certificate simply states that he is “able” to work, without addressing his specific job duties. Can we send him to another physician for a second fitness-for-duty examination? —A.L.