First, you must clearly communicate your expectations. Employees must know that they are expected to arrive for work on time, return promptly from breaks, follow procedures for requesting time off, treat customers and coworkers with courtesy and respect, etc. If your department has written policies covering these areas, make sure each employee receives a copy or knows where the unit’s copy is.
Supervisors are also responsible for monitoring employees’ conduct and for providing honest and timely feedback when an employee fails to meet expectations.