Although policy design is one of the spaces for the institutional configuration of the gender order, academic research on the processes of law production is practically non-existent. Consequently, this study aims to unveil the social representations of masculinity present in the Chilean parliamentary discourse within the framework of the processing of Law 20.047, which regulates paternity leave. Considering a qualitative approach, a phenomenological design, and information collection through doc-umentary review in the digital archives of the National Congress Library, a textual corpus was obtained and subjected to a structural analysis of discourse. The results show a parliamentary discourse that overvalues biological fatherhood and reduces its practice to accompanying maternity. It also demonstrates an equitable image of the rights and duties that men and women have regarding their children and a mode of thinking that highlights the involvement of young men in reproductive tasks. All of this reveals a representation of masculinity in which traditional belief systems converge with more egalitarian cognitive frameworks and which presents differences according to sex and political sector