Researching the fundamentals of discrimination in the job market helps us better understand injustices in the workplace. We build on Foote, Whatley, and Wright’s (2003) work, which highlighted Ford Motor Company’s exploitation of labor market inequality by concentrating black workers in unpleasant foundry jobs in the 1920s-1940s. This indicated that wage alone is not a conclusive indicator of labor market discrimination. We expand this analysis to a broader set of jobs across three firms. Our study measures occupational segregation using Stata to examine archived employee records from Ford, A.M. Byers, and Pullman, classifying workers by occupation and measuring the degree of segregation.