There are specific tax rules that you need to follow when employing many types of seasonal employees. The Tax office has provided a special tax table to use when employing people in the horticulture industry.
Australian Taxation Office (ATO) ‘Special tax table for individuals employed in the horticultural industry - NAT 1013-05.2006’ 
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For more information visit www.ato.gov.au or call 13 28 66.
Overseas employees on visas
Many overseas employees work in the horticulture industry. Find out your rights and obligations when employing overseas workers by contacting the Department of Immigration and Citizenship (DIAC) or call 131 881.