God may or may not be on the side of unions, but a Catholic scholars group says that being on the other side, that is being against unions, is a "grave violation" of the church's social doctrine. Opposing unions is, in fact, a mortal sin. And should be.
Anti-union actions violate both the letter and spirit of Catholic social doctrine, declared the Massachusetts- based Catholic Scholars for Worker Justice in a document distributed recently by the Catholic News Service.
Specifically, say the scholars, it violates church doctrine to try to block union organizing campaigns, stall in union contract talks, unilaterally roll back wages and benefits and violate existing labor contracts and other labor-management agreements.
http://www.truth-out.org/gods-not-side-union-busters60676 (http://www.truth-out.org/gods-not-side-union-busters60676)
This will probably have similar impact to the church proscribing all birth control products for good Catholics. It will fuel those on the right who decry social justice as well.
Lucky for me I'm not Catholic.
I'm a practicing non-Catholic.
I no longer have to practice - I have perfected being non-Catholic.
Anti-union activities by any church - or any other political activity for that matter - should be fine. As long as they don't get to keep their tax-exempt status while doing it.