An employee on an approved leave of absence shall continue to accumulate seniority during the period of his absence. An employee on an approved leave of absence of thirty (30) calendar days or less in any calendar year, shall have his hospitalization and surgical insurance and death benefit continued in force by the City. An employee on an approved leave of absence for more than thirty (30) calendar days in any calendar year shall not receive fringe benefits during the period of such leave, exceeding the first thirty (30) days, however, the employee may arrange to prepay through the Division of Accounts the premiums necessary to continue the employees hospitalization and surgical insurance in force during the time the employee is on leave. The exceptions to this are a leave pursuant to the Family and Medical Leave Act of 1993 or an industrial injury leave as provided in this Chapter.