Changeability of work values was studied by longitudinal analyses of nurses and engineers from the Stockholm area in Sweden. Questionnaires were completed by 173 male and 48 female engineers and 353 female and 31 male nurses at three measurement occasions covering about four and half years from the end of their vocational education. Women's ratings of Social relations and Altruism remained higher than men's while women & acute; ratings of Benefit/career and Influence increased which eliminated the initial gender difference. The changeability of work values is discussed in terms of challenges and norms in working life.