Section 157. Absentee leave

Every member of such police department shall be
  entitled,  in  addition to any vacation or absentee leave now prescribed
  by law, to one day of rest in seven. The chief or acting  chief  of  the
  police  department  shall  keep  a time book showing the name and shield
  number of each member of the department and the hours worked by each  of
  such policemen in each day. The town board may make a variation from the
  above  prescribed  hours  of vacation, provided the member shall receive
  during each year the actual number of days absentee leave to which he is
  entitled. The town board, at its option, may, in addition to the days of
  rest hereinbefore provided, grant an annual vacation with pay.  Whenever
  the  town  board  shall designate any policeman to attend police school,
  such attendance shall be deemed in  the  course  of  duty  and  when  so
  attending  he  shall  receive his usual pay and reimbursement for actual
  and necessary expenses. Sick leave with full pay may be granted whenever
  such sickness or disability has been incurred without the delinquency of
  the policeman.