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Your pay and your protection from reprisal
A worker who reasonably ceases unsafe work under the WHS Act stays employed and is entitled to be paid as if they had kept working (and your PCBU may offer suitable alternative work in the meantime). It is unlawful for your employer to sack, demote, threaten or otherwise punish you for raising a genuine safety concern or exercising a WHS right — that is prohibited discriminatory or reprisal conduct (model WHS Act ss104-109; equivalent protections apply in Victoria and WA).
Your WHS regulator
SafeWork NSW — 13 10 50 (official page)
Under the Work Health and Safety Act 2011 (NSW).
This is general information about your work health and safety rights, not legal advice, and does not decide your situation. The right to cease work turns on the specific facts. If you are unsure, or if you face any consequence for raising a safety concern, contact your WHS regulator, your union or a workplace lawyer for advice.