Writing Exams. A Nurse shall be entitled to leave of absence without loss of earnings from their regularly scheduled working hours for the purpose of writing exams arising out of the Quality Assurance Program required by the College of Nurses of Ontario. The period of the leave may include the night shift prior to and any scheduled shifts commencing on the day of the examination as long as payment under this clause does not result in payment for more than one regularly scheduled shift. Part-time Nurses will be credited with seniority and service for all such hours paid as provided above for the purpose of writing such exams.