Va. Code § 40.1-66
Any person, firm, association, corporation, or labor union or organization engaged in lockouts, layoffs, boycotts, picketing, work stoppages or other conduct, a purpose of which is to cause, force, persuade or induce any other person, firm, association, corporation or labor union or organization to violate any provision of this article shall be guilty of illegal conduct contrary to public policy; provided that nothing herein contained shall be construed to prevent or make illegal the peaceful and orderly solicitation and persuasion by union members of others to join a union, unaccompanied by any intimidation, use of force, threat of use of force, reprisal or threat of reprisal, and provided that no such solicitation or persuasion shall be conducted so as to interfere with, or interrupt the work of any employee during working hours.
Va. Code § 40.1-66