Clauses such as this have been around for years, just no one has bothered to scrutinise them until now.... My initial temporary contract in 2008 stated -
"Your duties include all work normally undertaken in this role and other duties that the Company may require you to do"
"You may be posted to another fleet from time to time"
"You may be posted to any location worldwide on a temporary or permanent basis..."
"If you fail to succesfully complete any training... the company may terminate your employment"