Sorry for the delay in replying to your post -- I've been traveling (or "travelling" as the British write).
I had a difficult time finding contract information as well.
As far as my contract went, there was a basic conversion from my USD pay to a GBP amount using a fixed date for the conversion factor. Then, in addition to that base salary, I was given a housing allowance, car allowance, moving allowance, and tax help allowance.
You may want to take a look at this site,
http://www.us-expatriate-handbook.com/contents.htm -- the guidebook is a good read. They advocate negotiating some additional items, such as trip to the US in case of family death, etc, but I didn't broach that.
In addition to the "normal" contract items (salary, vacation, work hours, etc), you may want to have clauses in the contract that will address:
- what will happen when you are done with your employement here -- will they pay for your return trip, will you continue working for the company, etc?
- what happens if they decide to change direction in the company and decide they don't want to have you as an employee anymore? Will they pay for your return trip, and moving costs?
- will they pay for at least one non-business trip to the US per year?
- during a trial period (ie: first three months), will they allow you to cancel out of the contract and return to the US, in case you are miserable here?
- will they contribute to your pension here?
- ... then there are a lot of other things to consider if you are married/moving with children
I hope this helps you start thinking about it. Please let me know if you need any additional info -- I will reply quicker than this time.
Cheers!