Of course differences training may be required, but it's still the same type rating. No need to go and pay for more training out of own pocket.
You see, on this side of the Atlantic it is common that a pilot is judged and valued by overall flight experience, and the employer then pays for the type rating or other specialized training.
It's a shame that your 300 hour wonder pilots on the eastern shore of the Atlantic see nothing wrong with being prostitutes. It's an even bigger shame that it now seems to be spreading among much more experienced pilots, who now feel the have to buy a type rating or "work" for free.