Our business is healthcare. We put staff through a pretty rigorous physical training during their orientation. the patient handling instructor asked the trainees if anyone had a previous back injury. One indicated she had a back injury from a previous job. While performing return demonstrations, she indicated that she felt pain in her back. Is this an indication of lack of competency in performing the physical requirements of the position? She did sign the job description which lists the physical requirements. What recourse do we have to protect ourselves from a WC?