Circumventing disasters such as injury and illness begins with trying to control a hazard to protect employees, and control of safety hazards begins with proactive measures.

Permit-required confined spaces are found in many workplaces and are very hazardous to employees that must enter them.

OSHA chief Dr. David Michaels answers the questions that were asked most frequently during the agency's recent Twitter chat about the new severe incident reporting requirements that go into effect Jan. 1.