This is probably the strongest case for a union, as least in my immediate area. In just a couple of years since one facility was unionized, they've made a difference in increasing pay.
The other hospitals have really been dragging their feet on pay raises, only giving increases when nurses leave to go to the union facility. And, even then, they still don't match the union pay.
Union hospital pay differential versus non-union hospitals, day shift:
At least $3 an hour more
Total annual increase in pay: $5,600
Minus union dues: -$800
Total net pay increase: $4,800 a year
The weekend differentials are a lot better at the union hospital also:
Union weekend differential: $5 an hour
Non-union weekend differential: $2 an hour
Total annual union differential increase: $3,700 a year
Plus, they've got more pay increases that are scheduled for summer under the union contract so ... I do think unions can make a difference with pay.