Some staff members have Seniority Sequence numbers. If 100 people were hired on the same date, 100 numbers are put into a large tin and a number is pulled for each person from an alphabetical list. If three people are hired on the same date, three numbers are placed in the tin. This number does not change; however, you may move up on the list due to resignations, retires, etc. The sequence numbers are important when there is a reduction in staff.