http://www.migration.wa.gov.au/s ... ateSponsorship.aspx
Offer of employment
If you are invited to make an application for State nomination from Western Australia you may require an offer of employment. This is a requirement for those who have studied in Australia and are a recent graduate, or live in an Australian state other than Western Australia. This is also a requirement for applicants with an occupation on the Western Australian skilled migration occupation list schedule 2 (off list).
The offer of employment must meet all of the following conditions:
be in your nominated, or closely related occupation;
be based in Western Australia, for visa subclass 489 this must be in an area outside of Perth and surrounding areas;
be for at least one year; and
be full time (a minimum of 37.5 hours a week).