Childlessness, Number of Children and The Labor Market at the Time of a New Technology, the US 1980-2018 The adoption of a new computer-based technology in the US in the late 1970s resulted in broad changes on the labor market that can be described by two major phenomena - job polarization and a shift in the relative returns to skill. A well established theoretical and empirical literature shows that commuting zones with a historically greater specialization in routine task intensive occupations adopted the new computer-based technology faster and subsequently saw greater changes on the local labor markets. In this paper, I build on the previous literature and analyze the relationship between the historical specialization of commuting zones...