Can Philippine Passport Holder get a visa on arrival in Hainan and is it easy to convert a Tourist Visa into a Employment Visa?

Quesion is can she get a "visa upon arrival" at Meilan Airport? We have checked with the China Visa Department here in HK and they have no clue whatsoever. Also, is it easy to convert a Tourist Visa into a Employment Visa? Do we need to exit the country to effect this conversion?