Employers that have developed effective safety-management programs have safer work environments for their employees. Over the past 30 years, through workplace investigation and analysis of injury and illness statistics, OSHA has determined that effective safety and health-management plans have four common characteristics: Senior management is committed to a safe work environment, and employees are involved in the decisions and activities to make it happen. The company is engaged in an ongoing worksite analysis to identify potential safety and health hazards. The company has active hazard-prevention and -control programs in place to correct hazards before injury or illness occurs. Safety and health training is an ongoing process in the company.