The facts:
union employees get a pension, 10 sick days per year, 10 personal days, and up to 5 weeks vacation per year
management people get no pension only 401k, 5 sick days per year, 5 personal days, and up to 4 weeks of vacation per year.
A union person can make around 80K per year working an average of 10 hours of OT per week, which is fairly easy to do in this business. Supervisors work an average of 50 hours per week and do not earn near the 80K range.
Surveys are done internally but be careful what you say, because it comes back to you. There is no follow up on training, meetings are all reactionary and revolve around what the current hot topic is. There are some very old school managers left in the business who believe in screaming and berating their management people publicly in front of all staff, this does not work, it's 2014, surely there are better ways to motivate people. You know who these management people are, do something about it.
