Extended Workday Service. Unit members with less than full-time contracts who accept an assignment that extends the workday beyond that provided for in the part-time contract will be compensated on an hourly prorata basis. The extended service assignment will normally be of short duration and involve providing service in the place of an absent unit member or due to an unforeseen or emergency situation. This prorata compensation is provided if the assignment is a continuation of the teacher's regular part-time contract assignment and the duties and responsibilities are essentially identical with those in effect during the regular part-time contract day. The basis for prorata compensation will be the unit member's regular class and step placement on the current salary schedule divided by the specified annual workdays in Section 6.01 above. The resulting daily pay rate will be divided by eight (8) to determine the appropriate hourly pay rate.