This document discusses the effects of overtime work and how overtime should be treated for cost accounting purposes. Working overtime can lead to decreased efficiency and increased costs due to late hours and postponing work. However, occasional overtime is not necessarily unhealthy and can show that workers are productive. When accounting for overtime, premium costs should be charged to specific orders for rush jobs, incorporated as increased normal wages if overtime is regular due to labor shortages, or charged to profit and loss as abnormal costs if due to issues like machinery breakdowns.