Collective bargaining between Vital Company and Workers Union (WU) reaches an impasse. WU calls a strike against Vital to pressure it into making concessions. The unionized workers leave their jobs and refuse to work. The workers picket Vital's plant, standing outside the facility with signs that complain of its management's unfairness. Is this action legal? If so, do the workers have the right to be paid while they are striking? Can non-workers participate in the picketing? Can co-workers refuse to cross the picket line? Explain.