JIT is a critical part of a more comprehensive approach referred to as lean manufacturing. Lean manufacturing is the persistent pursuit and elimination of waste that simultaneously embodies respect for people. Waste is anything that does not add value to the end user (customer). As a result of eliminating waste, lead time is decreased, production processes are streamlined, and costs are decreased. Depending on the nature of the value streams created in lean manufacturing, a more accurate assessment of product costs may result