HR policies as prevention
At a conference a few years back, there was a session about steps an employer can legally take to oppose a union organizing campaign. I recall my initial reaction to the topic was once a union organizing campaign begins, "it’s too late". I believe that most union organizing is borne of long-time employee dissatisfaction and insecurity regarding working conditions and management. While there may be some workplaces where union organization results from a political ideology, in most cases, few employees would sign up for the paying of union dues if they did not see the union as an answer to substandard or uncertain workplace policies.