However, many Blaux of these improvements require the sustained involvement of employees, employers and society in the activities required to make a difference. This is achieved through the empowerment of employees enabling them to make decisions about their own health. Occupational Health Advisors (OHA) are well placed to carry out needs assessment for health promotion initiatives with the working populations they serve, to prioritize these initiatives alongside other occupational health and safety Blaux portable ac  initiatives which may be underway, and to coordinate the activities at the enterprise level to ensure that initiatives which are planned are delivered.