The aim of this work is to carry out a constitutional and infraconstitutional comparison between Brazilian and Argentinian legislation on the introduction of holidays and to verify the main similarities and distinctions between the laws studied, with a view to verifying whether or not the changes brought about by labour reform in the Brazilian worker’s holidays are unfavourable in the light of alienation. It is pointed out that Brazilian legislation, even after its change, although splitting may lead to a reduction in the time for disconnecting work, is more favourable than the legislation of the neighbouring country. It also concludes that, in this respect, the fragmentation of leave, as proposed, does not infringe either the Brazilian Federal Constitution or ILO Convention No 132.