The registered trade union and employer should seek to agree to picketing rules before the commencement of the strike or picket.
A collective agreement may contain picketing rules. When an agreement is negotiated the following factors should be considered:
The nature of the authorisation and its service upon the employer;
the notice of the commencement of the picket, including the place, time and the extent of the picket;
the nature of the conduct in the picket;
the number of picketers and their location;
the modes of communication between marshals and the employer and any other relevant parties;
access to the employer's premises for purposes other than picketing, e.g. access to toilets, the use of telephones, etc.;
the conduct of the picketers on the employer's premises; and
The factors listed in subparagraph (2) apply to the determination of picketing rules by a commissioner.