Do not forget that figures quoted are for LH captain after you have spent 3 years as FO.
I guess the questions you should be getting answers to are...
What's the pension ?
What's the lol ?
What's the sick pay ?
What's the increments every year ?
How much did you pay to get in ?
What are your employee rights as you work for OSM ?
Which union will you be a member of ?
If you do not actually know from them what the salary actually is have you wondered why?