I have asked the immigration department. I think in that case the helper can break contract and help you without requiring to go back to PH first. I am now encountering a similar case where the paper processing is in progress. I am told by the immigration officer that the helper can stay for further 6 months and will be required to go back to PH unless the policy changes.
Suggest you can call the immigration hotline to get more clarity. Good luck. :)