This publications examines the characteristics of Mexico's institutional reforms, their relevance in the broader context of the history of the Mexican labor model, and their current implementation status. The authors first present what might be called the “institutional stability paradox” of the old labor model, which prevailed in Mexico for nearly a century. They then discuss the main transformations of this model in the context of the TPP and USMCA negotiations. The publication also presents an assessment of current challenges in the reform process.