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-17§ 144. Compensation (a) The head of each department, in accordance with this subchapter, shall establish, and from time to time may revise, the rates of basic compensation for positions and employees under his jurisdiction. (b) The rates of basic compensation may be established and revised in relation to the rates of compensation for the same or similar work performed in the continental United States or in such areas outside the continental United States as may be designated in the regulations referred to in section 165(a) of this title. (c) The head of each department may grant increases in rates of basic compensation in amounts not to exceed the amounts of the increases granted, from time to time, by Act of Congress in corresponding rates of compensation in the appropriate schedule or scale of pay. The head of the department concerned may make the increases effective as of such date as he designates but not earlier than the effective date of the corresponding increases provided by the Act of Congress. (d) A rate of basic compensation established under this section may not exceed by more than 25 percent, when increased by the amounts of the allowance and the differential authorized by section 146 of this title, the rate of basic compensation for the same or similar work performed in the continental United States by employees of the Government of the United States. § 145. Uniform application of standards and rates The established employment standards and rates of basic compensation established pursuant to sections 143 and 144 of this title shall be applied uniformly, irrespective of whether the employee or individual concerned is a citizen of the United States or a citizen of the Republic of Panama. § 146. Additional allowance and differential In addition to established basic compensation, there shall be paid to each employee who is a citizen of the United States such amounts as the head of the department concerned determines to be payable, as follows: (1) an allowance for taxes which operate to reduce his disposable income in comparison with the disposable incomes of those employees who are not citizens of the United States; and (2) an overseas (tropical) differential not in excess of an amount equal to 25 percent of the aggregate amount of the rate of basic compensation so established and the amount of the allowance provided in accordance with paragraph (1) of this section. § 147. Security positions Notwithstanding any other provision of this subchapter but subject to the regulations referred to in section 155(a) of this title, the head of each department may designate any position under his jurisdiction as a position which for security reasons shall be filled by a citizen of the United States; including but not limited to, positions (a) involving security of property; (b) involving access to defense information not releasable to foreign nationals; or (c) requiring the use of United States citizens to insure continuity and capability of operation and administration of activities in the Canal Zone by the United States Government. § 148. Benefits based on compensation For the purpose of determining: (1) amounts of insurance under the Federal Employees' Group Life Insurance Act of 1954, as amended (5 U.S.C., sec. 2091 et seq.);
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