Job insecurity has evolved in a wide range of phenomena that have been little addressed in the academic literature. One of these phenomena is to observe how the implementation of labor legislation within an economic crisis affects the perception of job insecurity. Thus, this research proposes that organizational justice, organizational support, and employability become three explanatory dimensions that shape job insecurity in the face of a change in labor legislation during an economic crisis. Through a survey of 205 employees of private companies in Puerto Rico and analyzing the data through PLS-SEM, the study demonstrates and supports new literature on how each variable considered affects perceptions of job insecurity and the productivity of human capital in the face of a change in labor legislation, a topic little addressed in the academic literature.