Final answer:
Employees have the right to picket their employer during a legal strike as part of collective bargaining efforts. Other stages of labor relations, like collective agreement negotiations and arbitration, do not inherently provide the right to picket.
Step-by-step explanation:
Employees have the right to picket their employer during a legal strike. Picketing is an activity where employees might stand outside their place of employment to express their concerns, often holding signs, in order to exert pressure for changes such as better working conditions. This is a part of the broader rights provided to workers under various labor laws including the Wagner Act of 1935, which affirms the right to organize and engage in collective bargaining. Specifically, legal strikes are an extension of collective bargaining where workers refuse to work until their demands are met. It's important to note that while employees have these rights, there are restrictions on these activities, such as during periods where the president can declare a "cooling-off period" in the event of a disruptive union strike.
Collective agreement negotiations, collective agreement policy grievances, and rights arbitration do not inherently grant the right to picket, as these are different stages and aspects of the labor relations process. Picketing is typically reserved for strikes or labor disputes where workers seek to gain public support and leverage during negotiations.