Significant increases in herd size in the dairy industry have resulted in hired labor providing primary care and management of the cows guided by protocols. Worker training programs have been instituted to provide workers with an understanding of the hows and whys of the protocols they are asked to follow. The ultimate goal of training is to have competent workers carrying out best management p...

The health status of workers in small companies has been noted to be relatively poor, but no actual comparisons of groups of variously sized companies within the same region based on the same methodology have ever been conducted. We undertook this study to clarify differences in health status according to company size. The subjects comprised workers of a Japanese steel company and various subco...