The aforementioned document listing Puerto Rico's public sector holidays for the upcoming calendar year 2019, which contains an error for the Día del Trabajo, follows the "Proyecto del Senado 1113", signed by he Governor of Puerto Rico, Alejandro García Padilla, 4 years ago (2014-07-29), slightly amended a year later (2015-10-21), and which immediately reduced the number of annual non-working public sector holidays in Puerto Rico, by lumping 4 of the annual non-working public sector holidays of Puerto Rico into one, the "Día de los Próceres Puertorriqueños" (2014-07-29, 2014-07-23, 2014-07-19, 2014-07-01, 2014-05-22, 2014-05-12 and 2014-03-19), followed by last year's "Proyecto de ley de la Cámara 938" which canceled the annual public holiday of Puerto Rico on July 25 (Día de la Constitución del Estado Libre Asociado).
Below are links to the news stories referred to in the above "Puerto Rico 2019 Public Holidays Announced" news story, as well as links to subsequents news stories which refer to the present news story.