This paper aims to analyze how teenagers and youth from different social classes -middle and low-income sectors-, experience their relationships with the world of work. It addresses the case of a group of street workers and the various work routes they trace, the relationship with other social processes, significant changes in their biographies in general, and in their work experiences in particular, and how they anticipate their future work. One of the most salient aspects of the research is that despite the profound transformation of the productive world characterized by its flexibility, instability, and precariousness, and even though in our societies several generations do not know the experience of employment "for life," this ideal notion about employment still weighs significantly in the construction of future trajectories. [ABSTRACT FROM AUTHOR]