Alec Beck is quoted in this article regarding the growning occurence of mental illness and depression in the workplace.
Alec said, "They have to work with the employee to get all the information on the table as soon as possible so each side can make an informed decision. People are afraid to ask for medical information, but after an employee self-identifies, you not only have the right to get that info, you must get it. Employers can't assume anything."