Not having your crew do things they would perceive as morally reprehensible is a fantastic start. Aside from that, providing an environment where they can discl

Not having your crew do things they would perceive as morally reprehensible is a fantastic start. Aside from that, providing an environment where they can disclose and/or discuss their issues with you would also work well. Any other measures of "putting a stop to it" will only make it worse.