SECTION 1. Act Numbered Eighty, entitled "An Act regulating the hours of labor, leaves of absence, and transportation of appointees under the Philippine Civil Service," is hereby amended:
(a) By changing section one to read as follows:
"SEC. 1. It shall be the duty of the heads of Departments, Bureaus, or Offices in the Philippine civil service to require of all employees, of whatever grade or class, not less than six hours of labor each day, not including time for lunch and exclusive of Sundays, and of Saturdays, after the hours of twelve o'clock and thirty minutes postmeridian, and of days declared public holidays by law or executive order, but the head of any Department, Bureau, or Office may, in the interest of the public service, extend the daily hours of labor herein specified for any or all of the employees in his Office, and in case of such extension it shall be without additional compensation. The head of any Department, Bureau, or Office, the work of which is of such a nature as to require the constant presence of one or more employees, may detail the necessary number of employees to perform labor on Sundays, Saturday afternoons, or public holidays, but shall exempt employees so detailed from labor on other days so that the total labor which is required of each employee so detailed during each quarter shall not be in excess of that required of other employees in such Department, Bureau, or Office not so detailed. In cases of special emergency the head of any Department, Bureau, or Office may also detail the necessary number of employees to perform labor on Sundays, Saturday afternoons, or public holidays under the restrictions above provided."
(b) By adding at the close of paragraph one of section four the following words:
"Provided, That, at the expiration of six months of satisfactory service in the Philippines, his traveling expenses form the place of his residence in the United States to the point of embarkation for Manila shall be refunded to him."