Medibank Overseas Health Cover (Overseas Visitors and Workers Health Cover) Overseas Workers Health Cover For visa subclass 482, 485, 403, 407, 408, 489 and more. Coming to Australia to work? Or moving onto a graduate visa looking for your first job here? Medibank’s range of overseas workers health covers can meet your visa health insurance requirements, while helping with the cost of medical treatment if you have an accident or get sick.