My partner is applying for a Z visa for a two year position in Wuhan.

And I will be accompanying him. We've been advised we need medicals. Is this a visa requirement or an employer requirement?? We've been trying to find information on what is required and where to go in Melbourne, Australia to get a medical done, but no one seems to know what we're talking about!!! Can this be done by any GP? Is there a form available somewhere that details what tests need to be done?

Thank you,
Emilie