(a) A counsellor or a housekeeper at institutions operated by the Department of Human Services, who, because of the nature of his duties is required to work long, unusual, or irregular hours, shall be paid a differential of 15 percent of his basic compensation which shall be in addition to his basic compensation.
(b) All employees, other than physicians, whose duties require his physical presence on duty in the tuberculosis or neuropsychiatric units of government hospitals, shall be paid a differential of 15 percent of his basic compensation, in addition to his basic compensation, for any shift of 8 hours or more during which he was assigned to such a unit and for any period of annual or sick leave immediately preceded and followed by assignment to such a unit.
(c) An employee who is assigned to regular night duty, that is, regularly scheduled work or rotating shifts between the hours of 6:00 p.m. and 6:00 a.m., shall be paid differential at the following rates:
(1) for nightwork of from 5 to 8 hours duration in a regular 8 hour shift, a differential of 10 percent of his basic rate of pay:
(2) for more than 8 hours of nightwork, a differential of 15 percent of his basic rate of pay; Provided, That the night duty assignment was not made at the behest of the employee.
(d) Supervisors and administrators paid under the General or Craft and Labor Schedules shall be placed in pay grades which are higher than the grades of the persons they supervise and which adequately compensate them for their additional responsibilities.
(e) Any employee of the Department of Health, as determined by the Commissioner of Health, whose regular duty assignment requires his presence at a correctional facility operated by the Bureau of Corrections shall be paid a hazardous duty differential of 15 percent of his basic compensation in addition to his basic compensation.