In a bid to prevent employees from keeping away from work during office hours, Chief Minister Arvind Kejriwal has directed all departments to adopt biometric attendance for contractual and daily wage employees, like regular staff, a news source has revealed. The move is aimed to ensure that the staff — especially those posted as sanitation workers and security guards — put in the minimum number of work hours and there is no loss to the exchequer through payment to staff for man-hours which they do not put in.