The changes will bring longevity to the picket rules as the parties will not have to agree on new strike or lockout rules. The picket rules remain in force between the parties for each subsequent dispute. If the parties are unable to agree on the picket rules, the Commissioner will have to establish the picket rules in accordance with the rules in force on good practice. The draft Code of Conduct for Collective Bargaining, Industrial Action and Pickets provides standard rules for picket lines. When a legal strike or lockout is underway, the code allows employees to picket. The purpose of picket lines is to put pressure on the employer by encouraging others not to work for the employer or to do business with the employer. Currently, parties can establish picket rules that regulate behaviour during a particular strike or lockout. If there are no picket rules, the bargaining council or the ccMA commissioner must either attempt to reach an agreement on the picket rules or impose picket rules, but only if a party is invited to do so. It is rare for employers to have the opportunity to go to the CCMA for agreement on picket rules before a union and its members go on strike. If collective bargaining is at an impasse and certain other legal rules are followed, there may be a legal stoppage of work. Work stoppages are generally referred to as either strikes or lockouts, often accompanied by picket lines.