251.71—Environmental and night shift differentials for manual-type positions.
The head of each agency, in coordination with the heads of other agencies, may authorize payment of environmental differentials for manual-type positions to compensate for exposure to hazards, physical hardships, and working conditions of an unusually severe nature which have not been considered in determining the base rate of pay for the position in question. Differentials for night work may also be established for manual-type positions. Any differential prescribed under this section shall conform with like differentials established under the Federal Wage System to the extent that it is practicable under local conditions. Such differential shall be treated as part of the basic compensation for the position to the extent it is so treated in the Federal Wage System.