75 years since the United Nations Organization voted on the Universal Declaration on Human Rights, on December 10, 1948, this paper is Part I of a synthesis of the evolution and development of the labour law from 2003, when the Labour Code was adopted, until October 2022; the focus is on the changes that were triggered by the SARS CoV-2 crisis. Part II, to be published in the next issue, shall further address the modifications that ens...