A study examined the effects of two organizational structural elements--gender appropriateness of job assignment and mix of women and men in a work group--upon the attitudes and behavior of Navy women. Effects of being assigned to a traditionally feminine or masculine job were examined and related to attrition, satisfaction, and reenlistment. Effects of being in a male-dominated, balanced, or female-dominated work group on satisfaction, expectations, and intentions toward remaining in the Navy were investigated. Samples of about 1000 men and 1000 women who joined the Navy in 1975 were followed throughout their first enrollment. Results showed that gender composition of work group was not related to the dependent measures. Being assigned to a job traditional for members of one's gender or to one that is nontraditional was not related to women's attrition, satisfaction, advancement, or reenlistment. Among men, rates of attrition and advancement were greater and reenlistment rates were lower for those in jobs considered nontraditional for women. Rates of advancement, migration, and completion of the first enlistment showed no gender differences. (Some conclusions are made based on the entire 4 years of the research.) (YLB)