Mr. Lappos, a so called Union Buster is usually a legal firm specializing in labor laws and experienced in all those facets of labor that work in favor of the employer.
Services from such a firm are rendered during the unionizing phase and throughout the presence of a labor union within a company.
There is a book in circulation titled "Confessions of a Union Buster" wrote by one of such lawyers.
While there is usually a certain degree of "reality distorsion" coming from both sides, the company carries an advantage most often than not, simply because they have the power to fire at will in most cases (but not after representation is voted in).
Workers, especially the younger ones or the most junior in the seniority scale are very sensible to veiled and not so veiled threats coming from the employer, particularly if they were hired after most of the unfovarable conditions leading to collective representation have been removed.