OSHA, county health departments and regulatory bodies oversee occupational health hazards in workplaces, including hospitals. Occupational health programmes include the employer activities undertaken to protect and promote the health and safety of employees in the workplace, including minimising exposure to hazardous substances, evaluating work practises and environments to reduce injury, and reducing or eliminating other health threats. Many health providers offer occupational health consultations as well as occupational health screenings, treatments and case-management. Employers and health providers often enter agreements whereby health providers will provide these services as well as managed the related workers compensation case management and rehabilitation programs. Employers seek to remain in compliance with regulations and reduce costs associated with employee injury and benefit utilization. Often, EAPs and drug prevention or drug testing programmes are also combined under this category.