No, employees who feel that the employer has done something wrong, will find that the Union will almost always file the Unfair Labour Practice complaint for you. There are a number of things that an employer may not do during certification or decertification drives. Many are obvious: threats, intimidation, coercion, penalties, or promises. There are less obvious things that employers are not allowed to do, like interfere with or control the administration of a Union. The Union will provide significant help to employees who want to become or remain Unionized and will usually provide an expert or a lawyer to go to the Labour Relations Board for you.