What actually help us after getting a memberships of any safety organization and which one will be best to be?

For health and safety practitioners, the desire to seek career progression regardless of the industry people find themselves is very essential. The most internationally recognized professional bodies for health and safety practitioners are the institute of occupational safety and health (IOSH) and the international institute of risk and safety managers (IIRSM) both based in the United Kingdom. 

Association or membership with professional bodies helps one to stay up to date with current and emerging trends within the profession and pushes members to uphold very high standards of professional ethics compared with non-professional members. Since membership with professional bodies are recognized world wide, it easily enhances one's opportunity to get noticed by prospective employers.