Loss of Casual Seniority. A Casual Employee shall cease to be an Employee and thus forfeit Casual seniority rights in the event that:
(i) The Employer has discontinued the assignment of shifts to a Casual Employee and notified the Casual Employee accordingly.
(ii) The Casual Employee resigns in writing.
(iii) The Casual Employee does not work any shifts for a period of six (6) months, excluding approved periods of unavailability.
