[mattm1]

Kellogg's went to a 30 hour work week and found productivity vastly improved - http://findarticles.com/p/articles/mi_m1093/is_1_42/ai_53697...

'After five years of six-hour work days, the company brass concluded that the "burden (or overhead) unit cost was reduced 25% . . . labor unit costs reduced 10% . . . accidents reduced 41% . . . the severity of accidents (days lost per incident) improved 51% . . . [and] 39% more people were working at Kellogg's than in 1929."'