will fatigue at a greater rate because it will cause constant adjustment and re-adjustment of the eyes.ConclusionImprovement of working conditions is essential to increasing worker productivity. The Gilbreths dedicated their lives to invent methods to reduce worker fatigue and waste of unnecessary energy. Many of their ideas are incorporated to many laws passed by the government during the 1930s and 1940s. Failure of businesses to follow the principles of the Gilbreths could result in lower worker productivity and morale. An important ingredient in a companys profitability is a good relationship with management and the employee....