ADA and reasonable accommodations

Q. We have a two-story building with production operations on the first floor and administrative offices on both the first and second floors. There is no elevator in the building. An office employee who works in a department on the second floor has been off work for a back injury. Now he wants to return to work but cannot climb the stairs. Do we have to reassign the employee to the first floor? There is no available space there, and the employee’s work duties are on the second floor ...