Your business will be affected by different laws depending on the type of your business.
Check out the fact sheet to determine where your business sits.- Factsheet on Employment Laws

The Department of Commerce works with the community to ensure high standards of safety and protection for workers and consumers, and promotes and fosters innovative industries, science and enterprise. - www.commerce.wa.gov.au 
Other Divisons Labour Relations aims to promote flexible, balanced and productive employment practices in Western Australia.
WorkSafe: Western Australian State Government agency responsible for the administration of the Occupational Safety and Health Act 1984 which promotes and secures the safety and health of persons in the workplace.. 

Fair Work Ombudsman - Role is to work with employees, employers, contractors and the community to promote harmonious, productive and cooperative workplaces. We investigate workplace complaints and enforce compliance with Australia's workplace laws. www.fwo.gov.au

Regional Rural and Remote employment law advice line- 1300 520 054

Wageline - 1300 655 266-Pty Ltd Business or incorporated-State jurisdiction

Workplace info line-1300 363 264.-Sole Trader -Federal jurisdiction

Industry Relations Comission-

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Lawlive November Newsletter- Unfair Dismmisssal