http://www.immi.gov.au/skilled/skilled-workers/rsms/obligations.htm
最後一段
Employee obligations
The employee must meet the following obligations.
commence employment within six months of arriving in Australia or within six months of the visa grant if they are already in Australia
remain employed in the nominated position in the regional area for at least two years.
The visa may be cancelled if the employee does not comply with these obligations to complete the two year contract with the employer.