As with the right to strike, picketing can be prohibited because of its object, timing or misconduct on the picket line.

Section 8(b)(7) declares it to be an unfair labor practice for a union to picket for certain objects whether the picketing accompanies a strike or not. This topic is covered in more detail in Unfair Labor Practices of Unions.

For information on picketing in violation of a no-strike, no-picketing clause in a collective bargaining agreement, see Unlawful Strike in Violation of No-Strike Provision.