If an operator has refused to follow safety procedures for years because he believes they do more harm than good, you should:

Taking disciplinary action immediately is the appropriate choice in this scenario. Ensuring safety procedures are followed is crucial in any operational environment, particularly in physical and chemical operations where the risk of accidents and hazardous situations is significant. An operator's refusal to adhere to established safety protocols not only endangers their own safety but also puts colleagues and the entire operation at risk.

Disciplinary action serves multiple purposes: it reinforces the importance of compliance with safety regulations, promotes a culture of accountability, and helps prevent potential accidents or incidents that could arise from unsafe practices. By addressing the issue promptly, you signal that adherence to safety measures is non-negotiable, which is essential for fostering a safe workplace environment.

The other choices, although they might seem like potential resolutions, do not adequately address the serious nature of the situation. Allowing the behavior to continue undermines safety standards and could result in harmful consequences. Seeking arbitration or asking the individual to sign a Hold Harmless agreement may imply that non-compliance is acceptable, which is not conducive to maintaining a safe operational culture.