Australian states delay phosphine exposure limit implementation

Multiple Australian states have announced delays to the implementation of new workplace exposure limits for phosphine, a chemical primarily used to protect stored grain from insect pests.

In New South Wales, the government has pushed back the revised limits to July 1, 2028. This decision follows advocacy from NSW Farmers and various grain industry bodies, who expressed concerns that the original December 2026 deadline would create significant uncertainty during the peak harvest period. Industry representatives noted that the additional time is necessary to build an evidence base and develop practical guidance for compliance.

Western Australia has also granted a three-year extension, delaying the changes until December 1, 2029. Agriculture Minister Jackie Jarvis stated the extension addresses industry concerns regarding the ability to reliably measure and practically implement the new limits. The reduction in the eight-hour exposure limit from 0.3 to 0.05 parts per million is a key component of the proposed changes. Victoria and South Australia have previously announced similar delays.