Thanks for your reply.
Yes I agree, 2 years probation is crazy. It actually says in my contract that its a year, but apparently that is an error. People have been to union over it and there is nothing they can do.
The company I work for is a large, very well known company throughout the world, but they seem to do whatever they want.
I know when I was sick last time, when I did my return to work I was told unofficially that if I was to be sick again it would go to a final written warning. In my contract it says I can get sick pay for 3 months, rather than the standard 6 months for people who are not in probation.
It's so unfair, because I've been there for 4 years, and I did a years probation at the start with the agency, then you have to go through the whole thing again when the company itself gives you a contract.