Allow me to stick my 2 cents in here.
I was a Teamster for a bit over 20 years back when there was around 3500 union LTL's.
The longest strike I was in was back in the 70's which lasted about 2 weeks.
Back in the day the Teamsters had enough leverage to slow down,in some cases shut down manufacturing in the entire nation.
Now days there is no real solidarity to twist the arms of any of the unionized companies to meet your demands.
So you really have to use your head and conceder the cost to call a strike,or even a work slow down.
You know for one,Fedex would love to see any work interruptions at UPS.
Also as I have posted a few times before,in any contract negotiations there is a give and take process.
Say you were able to go out on strike,first off you have to keep paying your dues to remain an active member.
Then you know big giant UPS corporate has the power to do as they please,union,or no union.
They may even be able to run their operation with contractors,maybe not,but do really want to call their bluff & walk out to find out?
You may be walking the picket line longer than you bargained for,only making strike pay if that.
You may eventually be begging the company to put you back to work,in that case you will be ready to lose more than you started with.
Well just my 2 cents,viewing both sides of this issue,take it or leave it,I hate to see any of my former co-works hang themselves.