This study was designed to examine the relationship of certain achievement-related constructs to individual motivation for social and occupational mobility. The specific achievement-related behavior which was studied centered on the decision to take advantage of the opportunity to participate in a union-sponsored college program offered to non-professional employees. All of the workers had an equal opportunity to attend college through the program, so the research focused on the intragroup differences among persons of lower socioeconomic status as reflected in their choosing to adopt the achievement-related behavior of college attendance. Findings supported the hypotheses that the variables of occupational aspirations and expectation and educational aspiration and expectation make a significant contribution to the variance of the dependent variable of college attendance. A significant relationship between high job satisfaction and aspiration for advancement within current occupational field was shown for the college-attending subjects. (LRA)