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 2014 The accident frequency was 6.7 (8.4) per million hours worked. Compared with the reference year 2011, this is a 26% decrease. By the end of 2014, 51% (45) of SCA’s 67 main sites were certified according to OHSAS 18001.