P.R. Laws tit. 29, § 271 : NINE Labor —PART I. Labor Provisions Generally —Chapter 13. Working Hours and Days —§ 271. Working hours—Per day and week TEXT PDF Eight (8) hours of work constitute the legal workday in Puerto Rico. Forty (40) hours of work constitute a workweek. History —May 15, 1948, No. 379, p. 1254, § 2; July 23, 1974, No. 223, Part 2, p. 161, § 1; July 20, 1995, No. 83, § 1.