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General Skilled Migration中提到
Part 1: Basic requirements
If your nominated occupation is an occupation listed on the Specified Trade Occupations list (available from www.immi.gov.au/skilled/general-skilled-migration/ pdf/specified-trade-occupations.pdf), you must provide evidence that you have been in paid employment in that skilled occupation for at least 12 months in the 24 months immediately before applying.
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this period of employment must have been accrued when you were in the workplace. This includes any extended paid leave such as maternity or other family leave.