With several management posters praising the National Master Agreement, let's see what it actually says . . . TRANSLATION: If Locals 705 and/or 710 set up primary picket lines, no member of the National Master bargaining unit can be required by UPS to cross those strike lines, or work behind those lines, or do work anywhere else that has been deliberately diverted from or bypassed those facilities on strike. This protection against discipline of any kind applies to all bargaining unit employees, even those who are not Teamster members. - - - - - Normally crossing a strike line also presents several safety hazards to the employee, his vehicle, and the possibility of hitting or running over a striker with your package car or feeder in all the confusion. Typically the employee would notify his supervisor that a primary picket line is up and that he is invoking his contractually agreed-upon right not to cross. The supervisor may then send a management person to take over the vehicle and do the dirty work of crossing the line to make the delivery if he chooses - - - - - Labor Law says that in an Economic Strike, the employer can hire permanent replacement workers. Usually these "permanent" workers are let go as part of a negotiated back-to-work agreement to end the strike. In an Unfair Labor Practice Strike, which I assume this one will be, the employer can only hire temporary replacement workers. When the strike is over, they all get the heave-ho automatically. This fact usually discourages temporary replacement workers once they find it out. In any event, attempting to use repacement workers usually doesn't work out very well because of the short duration, and the extensive training involved, all under very difficult circumstances.