Base Maintenance Overtime Distribution Procedure
Item, (A) General, > 4. states:
On the second Monday of January, every odd year, at 2359 hrs. local time, the Company will reset the hours by Occupational Seniority on the Overtime List (OTL) to zero for equalization purposes for all shops/docks or work units. In the event two or more employees have the same seniority date, the OTL will list the employee that is higher on the master seniority list first, with consideration of the Kasher decision where applicable.
See the full document here: Base OT Guidelines – 5-15-2014