A machine fire has caused extensive damage to your work place and four workers were hospitalised with somek inhalation. You are company health and safety officer have been asked to develop an accident investigation methodology following this incident, The investigation methodology must be undertaken with a review of relevant literature, legislation other relevant guidance docs. You should review policy, update risk assessment controls, update safety statement 

The world of work has changed dramatically. Globalization affects the structure of workplaces, the way work is performed, and occupational safety and health (OSH). Despite great strides in improving OSH during the past century, an estimated 317 million nonfatal occupational injuries and 321,000 occupational fatalities occur globally each year, that is, 151 workers sustain a work-related accident every 15 seconds (ILO 2013a). Poor workplace safety and health place a substantial economic burden on individuals, employers, and society. Estimates from the International Social Security Association (ISSA) suggest that costs associated with nonfatal workplace accidents alone equal approximately 4 percent of world gross domestic product (GDP) each year (ISSA 2014; SafeWork 2012).