The purpose of this paper is to explore differentials in the job satisfaction and the organizational commitment of Baby Boomers and Generation X. In light of multiple age segments in the workforce, and the ageing population, human resource management strategies aimed at attracting, engaging, and retaining employees of all ages are of strategic importance. Through the use of the large-scale Quality of Life at Work, 2006-2010 survey (Spain), we have carried out an empirical approach that points to real and significant differences between these two generations, with respect to wages, leisure time, co-worker relationships, occupations, and human relationships. The findings of our study suggest that management will increasingly be required to take the generational diversity of the workforce into account. The value of this paper is to show several marked differences between generation groups in the labour market and, subsequently, it concludes by considering the implications of our results for work management both in theory and in practice