Vacation Allowance Employees in permanent positions are entitled to vacation with pay. Accrual is based upon straight time hours of working time per calendar month of service and begins on the date of appointment to a permanent position. Increased accruals begin on the first of the month following the month in which the employee qualifies. Accrual for portions of a month shall be in minimum amounts of one (1) hour calculated on the same basis as for partial month compensation pursuant to Section 5.6 of this MOU. Vacation credits may be taken in one (1) minute increments but may not be taken during the first six (6) months of employment (not necessarily synonymous with probationary status) except where sick leave has been exhausted; and none shall be allowed in excess of actual accrual at the time vacation is taken.