P.R. Laws tit. 3, § 1451x
The collective agreements signed by virtue of this chapter shall not have an original effective term of more than three (3) years. The effectiveness of an agreement may be extended throughout the negotiation by agreement between the parties or pursuant to the terms provided in the agreement including the grievances and complaints procedure, excluding those provisions of economic impact, provided it is for a definite and limited term. At no time shall this extension interrupt the terms of any petition for certification or decertification and petitions for classification promulgated in this chapter. Any clause that is contrary to this prohibition shall be null.
History —Feb. 25, 1998, No. 45, § 7.8, renumbered as § 7.7 on Aug. 7, 2001, No. 96, § 5; May 26, 2006, No. 109, § 2.