Occupational Health and Safety Risk Assessment Regulation Article 5 Employer; It carries out a risk assessment in terms of occupational health and safety with the aim of ensuring, maintaining and improving the health and safety of the working environment and employees. Occupational Health and Safety Risk Assessment Regulation Article 12 The risk assessment made; It is renewed at the latest every two, four and six years, respectively, in very dangerous, dangerous and less dangerous workplaces according to the hazard class. The risk assessment is renewed in whole or in part, taking into account the fact that new risks that may arise in the following situations affect all or a part of the workplace. Moving business or making changes to buildings. Changes in technology, materials and equipment used in the workplace. Changes in the production method. Occurrence of work accident, occupational disease or near miss event. There is a legislative change regarding the limit values of the working environment. Considering it necessary according to the results of the work environment measurement and health surveillance. The emergence of a new hazard originating from outside the workplace that may affect the workplace.