Theattitudes of American's young working class are critically important to managers who have to find people for an increasingly high-tech,service-based economy.Half the US workface is now under 35,up from just over a third at the end of the 1950s.Whether their collars are blue,white,or pink most of these are non-supervisory workers-47million,vs.ten million supervisors,managers,and professionals of the same age whose own careers will turn at least partly on their ability to manage these increasingly well-educated and skilled people.