This chapter examines the ways in which occupational classes (the middle and working classes) have been reproduced over generations, and the ways in which this has depended on a stable, nationally determined labour market. It goes on to suggest how this reproduction is weakened through the impact of global processes at the national level. The implications these changes have for established jobs, new recruits to the labour market and social mobility are discussed, as are the effect these changes have on class identities.