The visa allows one to work for up to 12 months. Should your employer REALLY like you then they can assist you to switch to another visa. You do need to return home to apply for a new visa.
Are there any restrictions on the VISA?
There are no restrictions, one can do anything (legal of course) anywhere in New Zealand.
The average pay rate starts at $13.50 dollars (R125) per hour.
The job market is very different to South Africa and this is because they are part of the Working Holiday Scheme where citizens from the member countries (South Africa is not one of them) can go online and apply their visa and get it in the same day. So employers are very used to foreigners showing up and looking for work. All previous applicants sent without a job have found work within a few weeks.
Yes, one may and it’s simply a case of completing a form and sending it off with the visa fee $180 and it takes 4/5 days to be processed.