This paper examines the decline in occupational segregation between black and white women over the twentieth century and analyzes how shifts in the occupational structure of the economy and changes in the racial composition of occupational categories contributed to this change. Overall, findings show that the decrease in occupational segregation between black and white women is a result of (1) decreasing demand in highly segregated "black women's occupations," especially agricultural labor and household work; (2) increasing supply of better educated black female workers; and (3) increasing equality of opportunity, particularly in the decade from 1960 to 1970. Thus, both market forces and changes in employers' hiring practices have contributed to the convergence in occupations between black and white women. (Author/GC)