Makes continuous, incremental improvement (kaizen) easier. ...
Reduces inventory. With improved flow, work in process (WIP) is reduced.
Improves morale. Employees want to do good work. ...
Builds in quality. When batch sizes reduce, defects are detected earlier (closer in time to when they happened) and less rework is necessary, with an encouragement to fix defects as soon as they happen.
Improves safety. With flow, work happens at a more regular, sustainable pace, with fewer mad peaks and boring troughs, translating to less distress and more (potential) eustress for the people involved. cf Anzeneering
