Even though many women continue to work after marriage or childbirth nowadays, the number of women in managerial positions is still lower in Japan than in other countries. Benevolent sexism (BS) at the workplace has been considered one of the obstacles that prevent women from being promoted. Based on ambivalent sexism theory (Glick & Fiske, 1996), we developed a new scale to measure BS toward working women in order to investigate how BS affects womenʼs promotion in Japan. After performing a series of factor analyses and examining the validity using an original BS scale and other related scales, eight items were found to adequately construct three theoretical factors of BS.