Congratulations to Sam for all his hard work in passing his IOSH exam. What does IOSH stand for? IOSH stands for Institution of Occupational Safety and Health, the Chartered body for health and safety professionals. IOSH is a UK-based organisation offering professional qualifications in order to raise standards of health and safety in the workplace. Sam now has the accreditation he needs to fulfil his role as HSE Adviser to JDMA.