ISO 45001 certification - Ohsas Certification in Delhi. ISO 45001 is an international standard that specifies requirements for an occupational health and safety (OH& S) management system, which is intended to improve the safety and health of both employees and other personnel. ISO 45001 will provide new impetus for occupational health and safety practices in organisations and will help improve safety for employees and contractors. This translates into additional opportunities for protecting and promoting worker’s health and performance, as well as a sustainable improvement of employee motivation