I had these links sent to me (by a newly qualified UK dentist, presently still in the UK) who tells me that there is a sort of "exchange" whereas newly qualified medical professionals can gain experience and have an OE at the same time. Some of these contracts are for a year so they can change from country to country, gaining experience then moving on. Apparently it's world wide. This also begs the question of what happens with the mistakes made ? Who "carries the can ?"
She intends to apply via these links to see how easily she could practice in New Zealand, check it out for yourself: