This perception, alas, is one of the problems with the JIT system. Too often, people see it as a quick fix. In fact, it requires great commitment, dedication, and, initially, expenses. Another problem implementing JIT in the United States is its emphasis on teamwork. In the US, we have not emphasized teamwork among workers, engineers and management until recently.
Workers are often suspicious of the very word team .
They see attempts to cut costs as threatening. This situation stems from the history of management and labor relations in the United States, which, historically, is quite different from that of Japan. Finally, removing WIP inventory too quickly can cause unnecessary problems. WIP provides a cushion that many factories may not be ready to remove. Wallace J. Hopp and Mark L. Spearman.