It totally is. In California OSHA states if you are a platform just four feet off the ground, you must be harnessed in so you don’t fall off the edge if you are four feet or closer to the edge. The stage is only 8 feet wide. On the one hand, the OSHA regulation seems silly because any adult should be able to handle himself without being told how. On the other hand, this is just a lawsuit waiting to happen if you get someone up there who won’t hold himself accountable for his actions.