RULE 25. OVERTIME.  On runs of one hundred (100) miles or less, overtime shall begin at the expiration of eight (8) hours; on runs of over one-hundred (100) miles overtime shall begin when the time on duty exceeds the miles run divided by 12 1/2. Overtime shall be paid for on the minute basis, at an hourly rate of three-sixteenths of the daily rate, according to class of engine or other power used.

NOTE: For application of this rule to engineers in interdivisional service, see Section l (b) of Part III of Appendix No. 10.