The basic workweek for annual salaried employees of the department, other than those employed on a part-time basis only and other than employees excluded from the application of overtime compensation under the rules of the Director of the Budget adopted pursuant to section 134 of the Civil Service Law, shall be 40 hours; provided, however, that where a shorter workweek would not interfere with the proper performance of government functions an appointing authority may establish a basic workweek of not less than 37½ hours and five days for any employees under its appointive jurisdiction as may be designated by it with the approval of the Division of the Budget; provided, however, that this section shall not be construed to increase the workweek of any employee for whom a workweek of less than 40 hours was prescribed by law, rule or administrative regulation as of January 2, 1957.

All employees are required to maintain a daily record of absences and time and leave credits earned and used in accordance with these rules. A daily record of attendance shall be maintained during the period covered by the school calendar and for any periods during which an employee may receive compensation which is in addition to his regular salary.

Overtime shall not be earned for time worked in excess of the basic workweek during the 10-month period an employee is paid his regular salary. An employee who works in his position or in any other position allocated to a salary grade in section 130 of the Civil Service Law for the two-month period during which his regular salary is not paid shall receive additional compensation for such service.