The 491 visa is a provisional visa for skilled workers. The NSW Government can nominate eligible skilled applicants who will commit to working in critical sectors in regional New South Wales.The Skilled Work Regional (Provisional) visa (subclass 491) allows skilled migrants to live, study and work in designated regional areas for a period of 5 years. You must meet the all criteria in one of the three following three streams to be eligible for NSW nomination:

Living and working in regional NSW;

recently completed study in regional NSW; or

living and working outside of a designated regional postcode of NSW.

NSW Skilled Occupation Lists | NSW Government