Rate of Earned Sick Leave. Sick leave shall be earned at a rate of one point six seven (1.67) days for every month in which there is a pay period for the Employee. The unused portion shall accumulate to a maximum of one hundred and eighty (180) days. This benefit shall be prorated for less than full-time employees. The one hundred and eighty (180) day maximum would increase to one hundred and eighty-two point five (182.5) day maximum for those employees from legacy Local #55 with a start date earlier than July 1, 1997.