What are the differences between promotion, transfer, and discharge?

promotion is a transfer of an employee from a present job to another job which involves substantial increase in pay, status and responsibility within the same organization. promotion may not generally, involve change of place ... Transfer is the movement of a worker from one job to another job witch does not involve substantial change of pay, status or responsibility within an organization which may or may not involve change of place ... Discharge refers to releasing the patient from the hospital after his treatment at the hospital is determined to be complete.