Over the years, American jobs have become more intellectually challenging and less physically exhausting. Yet more and more American workers—blue collar, white collar, and pink collar—are expressing dissatisfaction with their jobs. They love their careers, but not their working conditions. What turns a model employee into a malcontent?David Kusnet followed the workers at four companies in the Seattle area in the turning-point year of 2000: Microsoft, Boeing, Kaiser Aluminum, and No...