I think you're wrong... I looked into it more and because a working holiday visa is NOT extendable, he cannot work on implied status. That being said, if we don't receive his OWP before his WHV expires, how do we change his status to a visitor so he can remain in the country?Yes, he can continue to work. Providing he applied for the OWP before his IEC ran out then he’s on implied status and the conditions remain exactly the same. The SIN number will just carry on as normal until he lands and a new one will be generated.