According to ANSI Z136.1-2014: “Training shall be provided to each LSO and employee routinely working with or potentially exposed to Class 3B or Class 4 laser radiation. Training should be provided to employees working with or potentially exposed to Class 1M, Class 2, Class 2M or Class 3R laser radiation”. Note- this applies to safety training. Training on laser-based equipment itself is always mandatory. From basic operators to maintenance and service personnel, some training is typically required- check with your supervisor or equipment manufacturer.