Leaving the workplace without prior information and permission is an act of serious misconduct and punishable. Such indiscipline need not be condoned, ignored, or overlooked because the implications of any employee on duty and not found at the workplace and loitering outside workplace premises, as it were, are fraught with dangers such as accidents, offenses committed, etc. Hence, curb this unhelpful work practice.
Enforce service rules, take disciplinary action, namely caution, warning, suspension in that order.
Harsh K Sharan, Kritarth Consulting, 5.6.2020