The main point appears to be economic, after 6 months of the unions proposal the company countered with a 3% from base of the expired contract retro to Apr 2005. The contract expired Apr 2004.
This site may give you an idea of industy wages
http://brian.hudson.home.mchsi.com/JobSites/jobs.htm
Maybe the breaking point: The company as of Sept 2005 has started hiring EMS pilots that meet CAMTS requirements at Level 5/6. The letter from the company stated it is managements right to hire at any wage despite hiring more experienced pilots at lesser wages. The company did offer to true up 60 pilots to level 5/6 but the union does not want a piece meal contract.
According to the union the negotiations have been ongoing for 23 months and see no reasonable effort from the company to resolve negotiations.
Additionally the company has hired contract pilots despite language in the contract that both parties agreed to against this process.
Lots of other things, Cost of living for EMS, bonus language, agency shop, 401K, per diem, vacation, life insurance and vacation issues.
The union has already petition for release from mediation. More to follow, I guess.