If you're in a position where you can determine if a union contract can pass (an executive or close to such, like an SVP) and you're actively against it internally, say that externally. Let the people who you're lying to on a daily basis that you, in fact, do not value them and see them as nothing more than an "expensive line item". Retract any mentions of caring about people from your company's messaging because internally, it's a farce.

If you allegedly trust the skill and minds of your workers, then have enough respect to allow them to be fully recognized in the procedure of every day operations, not as some "asset" but an authority over what they do — that's why you hired them.