Climbing Pay for GROUP D Employees. Employees in GROUP D shall be paid at the rate of time and one-half (1 1/2) of their regular hourly rate (as defined by federal law) when they engage in the cleaning and replacing of light bulbs, and/or the cleaning and replacing of glassware, on the towers at the stadium and/or the flood lights on the tennis courts east of Xxxx Gym. Employees engaged in such climbing work shall be compensated for a minimum of thirty (30) minutes, or for the time actually spent performing those duties, whichever is greater. Eligibility for climbing pay is subject to University authorization.