President of the United States

“ The Civil Service Commission shall define the extent to which and the conditions under which an employee serving within the Territories may receive both a Territorial post differential and a Territorial cost-of-living allowance, pursuant to section 207 of the Act. In carrying out its functions under this Part the Commission may take due notice of any special allowances, other than under section 207 of the act, granted to personnel employed by the United States in Territories. ”

“ Foreign Service staff officers and employees at the posts referred to in section 401, above, shall, while such posts remain Foreign Service differential posts, be paid additional compensation in the form of salary differentials at 5 percent, 10 percent, 121⁄2 percent, 15 percent, 20 percent, and 25 percent of the basic salary rates of the staff corps pay schedule, in accordance with such regulations as the Secretary of State may prescribe. ”

“ Persons serving under contract.
Any other provision of this Part notwithstanding, any person who would otherwise be eligible to receive a foreign post differential under this Part shall, if he is serving under contract, be compensated according to the terms of such contract for the period thereof and shall, during such period, be ineligible to receive a foreign post differential. ”