An employee who is unable to work because of industrial (service connected) disability shall accumulate all seniority rights during this period of sickness or disability not to exceed two (2) years duration, provided the employee has not secured other full time employment during the term of this disability. This period may be extended by mutual agreement. Prior to the end of three (3) months and each quarter thereafter the City and the Union will meet with the employee to determine if the employee will be able to return to their employment.