Law NO. 20.984 ON CLASSIFICATION OF HEAVY LABOR AND ITS EFFECTS Having present that the National Congress has given its approval to the bill originated in motion by the Honorable Senator Juan Pablo Letelier Morel and the former senators Mr Jaime Gazmuri Mujica, Pedro Muñoz Aburto and Ricardo Núñez Muñoz, Draft Law: " Single Article.-Introduces, in Article 3 of Law No 19.404, the following amendments: 1) Add, in the fourth indent, the following: "employer," the expression ", the union." (2) Intercalanse, following the fifth indent, the following sixth and seventh, new points, passing the current sixth, seventh and eighth points, to be the eighth, ninth and tenth, respectively: " The heavy duty rating of a (a) a specific job will have an impact, whether it is carried out by workers directly employed by the respective employer or under subcontracting arrangements or made available by transitional service undertakings. The amendments referred to in Article 4 (2) of the Labour Code shall not affect the qualification made, unless it is established that the factors considered in the assessment have varied. ' TRANSITIONAL PROVISIONS Article 1-This law shall enter into force on the first day of the sixth month following its publication in the Official Journal. Article 2.-It shall be applicable to the jobs qualified as heavy duty prior to the entry into force of this law, the provisions of the sixth paragraph of article 3 of Law No. 19,404, incorporated by this law, to from the date of its entry into force. '; And because I have had to approve and sanction it; therefore, promulgate and take effect as the Law of the Republic. Santiago, 3 January 2017.-MICHELLE BACHELET, President of the Republic.-Alejandra Krauss Valle, Minister of Labour and Social Welfare. What I transcribe to you for your knowledge.-Francisco Javier Díaz Verdugo, Assistant Secretary of Labor.