Pros

Good pay for the work you do with predictable growth as long as the union contract is signed and in place.
Good benefits for the work you do.
On the job paid training.
Transfer and growth opportunities available during times of company growth, but limited due to union seniority rules.

Cons

UNIONIZED.
Due to the union, you are no more compensated for doing great work than if you go about your work as if you don't care.
Due to the union, most advancement and overtime and transfer opportunities go to the most senior candidate, not necessarily the most qualified candidate.
Poor communication from the upper levels of the company regarding job security prospects in a down economy.
Unionized form of productivity quotas create an uneven balance of work and lack of reward for those who even exceed such quotas.

Advice to Senior Management

The advice is really to corporate and the CWA.

Create a system of reward which reinforces the high achievers and producers. Do away with seniority entitlement and other socialist style of pay raises and time-with-company-based awards. Where is my motivation to produce 200% when I will never see the fruits of a reward for my effort, or when someone with more seniority gets that trip to New Orleans to do overtime work, though I'm the most qualified and deserving candidate?