To the Editor: In developing public expectations for dialysis therapy, it is important to define “rehabilitation” precisely. If rehabilitation necessarily includes a return to work, then factors such as delivery of adequate hours of dialysis, positive reinforcement by unit personnel, and provision of a dialysis schedule compatible with normal working hours are facilitating conditions that must be satisfied. Inadequately dialyzed patients may be too sick to work. Formerly sick patients whose conditions are stabilized by hemodialysis need active encouragement to return to a normal routine; some, who have previously held labor-intensive jobs, may need retraining. Operating hours in most dialysis. . .