Whs act 2020 July 8, 2019 16 32 64 128 Whs act 2020 overview Whs act 2020 section 19 Whs act 2020 regulations Whs act 2020 psychological safety Whs act 2020 codes of practice Whs act 2020 section 18 Whs act 2020 austlii Whs act 2020 summary Whs act 2020 book Whs act 2020 consultation Whs act 2020 penalties Worksafe wa whs act 2020