Lean is a popular fact that JIT system started in
the initial years after the World War II in Japan for
the Toyota automobile system. Toyoda family in
Japan decided to change their automatic loom
manufacturing business to the automobile business.
But they had few problems to overcome. They could
not compete with the giants like Ford in the foreign
markets. Therefore Toyota had to depend upon the
small local markets. They also had to bring down the
raw materials from outside. Also they had to produce
in small batches. They haven’t had much of capital to
work with. Therefore capital was very important.
With these constrains Taiichi Ohno took over the
challenge of achieving the impossible. With his right
hand man Sheigo Shingo for next three decades he
built the Toyota production system or the Just In
Time system.