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-16(1) nine hours in a twenty-four-hour period in a tower, office, place or station continuously operated night and day; or (2) thirteen hours in a tower, office, place or station operated only during the daytime. (b) I n case of emergency, the Panama Canal Company may permit the employees referred to in subsection (a) of this section to be and remain on duty for four additional hours in a twenty-four-hour period for not more than three days in a week. Subchapter III—Wage and Employment Practices § 141. Definitions As used in this subchapter: "continental United States" means the several States of the United States of America existing on July 25, 1958, and the District of Columbia; "department" means a department, agency, or independent establishment in the executive branch of the Government of the ITiiited States (including a corporation wholly owned or controlled by the United States) which conducts operations in the Canal Zone; "employee" means an individual holding a position; and "position" means those duties and responsibilities of a civilian nature under the jurisdiction of a department: (1) which are performed in the Canal Zone; or (2) with respect to which the exclusion of individuals from the Classification Act of 1949, as amended (5 U.S.C., ch. 21), is provided for by section 202(21)(B) of that Act, as amended (5 U.S.C. sec. 1082(21)(B)). § 142. General rules governing wage and employment practices (a) The head of each department shall conduct the wage and employment practices in the Canal Zone of his department in accordance with the: (1) principles established in item 1 of the Memorandum of Understandings set forth in section 1(b) of Public Law 85-550 (July 25, 1958, 72 Stat. 405); (2) provisions of this subchapter; (3) regulations promulgated by, or under the authority of, the President of the United States in accordance with this subchapter; and (4) provisions of applicable law. (b) To the extent he deems appropriate, the President may: (1) exclude any employee or position from this subchapter or from any provision of this subchapter; and (2) extend to any employee, whether or not the employee is a citizen of the United States, the same rights and privileges as are provided by applicable laws and regulations for citizens of the United States employed in the competitive civil service of the Government of the United States. § 143. Employment standard s The head of each department shall establish written standards for the: (1) determination of the qualifications and fitness of employees and of individuals under consideration for appointment to positions; and (2) selection of individuals for appointment, promotion, or transfer to positions. The standards shall conform with this subchapter, the regulations referred to in section 155(a) of this title, and (lie Canal Zone Merit System referred to by section 149 of this title.
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