According to the Workers Compensation Act, if you are an employer with 20 or more staff in a workplace determined to be moderate or high risk, or one with 50 or more workers in a workplace determined to be low risk, you are required to implement a formal occupational health and safety (OH&S) program. And you must also maintain a joint occupational health and safety committee consisting of both employer and employee representatives if you employ 20 or more workers.If you are not required to establish an OH&S program, it is still a good practice to implement the basics in the workplace. As an employer you are responsible for ensuring that you and your employees are working in a safe and healthy environment. It contributes to positive work morale and is part of a good employee retention strategy.