Employee health & safety Occupational health and safety are a top priority – no one should have to risk their health at work. We devote the same focus to the physical working environment that we do to fostering a safety-first culture. Our aim is zero workplace accidents, and we will decrease our accident frequency rate by 25% between 2011–2016. OHSAS 18001 will be implemented at all main sites by 2016. Outcome 2015 The accident frequency was 6.3 (6.7) per million hours worked, a decrease of 6%. Compared with the reference year of 2011, the decline was 31%. By the end of 2015, 68% (52) of SCA’s 65 main sites were certified according to OHSAS 18001.