What does OSHA say about workplace temperature, lighting, and noise levels?

OSHA (the Occupational Safety and Health Act) mandates that lighting should be bright enough so that employees do not have to strain their eyes and temperature should be kept at a comfortable level. Further, noise levels should also be at a comfortable level, and if the noise levels exceed 85 decibels employers are required to provide, and employees are required to wear, protective headgear.