Health Surveillance Requirements for Welders

The WHS Regulation 2025 requires PCBUs to provide health surveillance for workers when they are exposed to a hazardous chemical listed in Schedule 14 of the regulation and there is a valid method of detecting the health effect associated with that exposure. For welders, this obligation applies when workers are exposed to manganese, chromium VI, nickel, cadmium, lead, or other scheduled substances above the action level. The action level is typically half the workplace exposure limit, meaning that health surveillance is triggered at very low exposure levels under the incoming WELs. For manganese, with an incoming WEL of 0.02 mg/m³, the action level is 0.01 mg/m³ — a level that virtually all welding operations will exceed. In practical terms, this means that health surveillance will be required for all workers who perform regular welding, cutting, or grinding operations on metals containing the scheduled substances. Health surveillance is not optional when the trigger criteria are met, and failure to provide it is an offence under the WHS Regulation 2025.

A comprehensive health surveillance program for welders should include several components matched to the specific substances and health effects relevant to the welding processes in use. Respiratory function testing using spirometry establishes a baseline for lung function and tracks changes over time that may indicate early occupational lung disease. Spirometry should be conducted before commencement of welding work and at annual intervals thereafter. A standardised respiratory questionnaire documents symptoms including cough, phlegm, wheeze, and shortness of breath and is completed at each surveillance visit. For workers exposed to manganese, neurological assessment using validated screening tools detects early signs of manganese neurotoxicity before clinical symptoms become apparent. Blood manganese levels provide a biomarker of recent exposure, although the correlation between blood levels and neurological effects is not linear. For workers exposed to chromium VI, urine chromium testing conducted at the end of a work shift measures recent exposure. For workers welding galvanised, cadmium-plated, or lead-coated materials, blood lead and urine cadmium testing are required. A chest X-ray at baseline and five-yearly intervals screens for welders' siderosis and early lung disease.

Health surveillance for welders must be conducted by or under the supervision of a registered medical practitioner with experience in occupational medicine. The provider must have access to spirometry equipment that meets the requirements of the Australian Lung Function Testing Guidelines, trained technicians to conduct the testing, and the clinical expertise to interpret results in the context of occupational exposures. Many fabrication businesses engage an occupational physician or an occupational health nurse practitioner who works under the direction of an occupational physician. The provider should receive information about the worker's exposure profile including the substances they are exposed to, the duration and frequency of exposure, the results of any workplace air monitoring, and the controls in place. This information allows the provider to tailor the surveillance program to the specific risks and to interpret results in the correct context. Group health surveillance visits at the workplace are more efficient and achieve higher participation rates than requiring individual workers to attend external appointments. The surveillance provider should issue individual reports to each worker and a de-identified summary report to the PCBU that identifies trends without breaching patient confidentiality.

When health surveillance identifies an abnormal result, the PCBU has specific obligations under the WHS Regulation 2025. The surveillance provider must inform both the worker and the PCBU of the result. If the result indicates that the worker may have contracted a disease or condition related to their work exposure, the PCBU must review the workplace controls to determine whether they are adequate, take reasonable steps to prevent further exposure until the controls have been reviewed, and provide the worker with additional health monitoring as recommended by the surveillance provider. The PCBU must also consider whether other workers performing similar work may be at risk and extend surveillance and control reviews accordingly. An abnormal surveillance result does not necessarily mean the worker has an occupational disease — it may indicate a non-occupational condition, a testing artefact, or normal biological variation. However, the PCBU must treat every abnormal result as a potential work-related finding until clinical investigation determines otherwise. All actions taken in response to abnormal results must be documented and retained as part of the health surveillance records.

Health surveillance records must be retained by the PCBU for at least 40 years after the last entry is made in the record, or for 30 years after the worker ceases employment, whichever is longer. This extended retention period reflects the long latency of many occupational diseases — manganism may not manifest for years after exposure ceases, and welding-related lung cancer can develop decades after the causative exposure. The records must include the name of the worker, the dates of each surveillance assessment, the type of surveillance conducted, the results and clinical interpretation, any recommendations made by the surveillance provider, and the actions taken by the PCBU in response to the results. Records must be kept confidential and accessible only to the worker, the surveillance provider, and authorised management personnel. When a worker leaves the business, the PCBU must offer to transfer the health surveillance records to the worker's new employer or to the worker's nominated medical practitioner. EHS Atlas provides secure, encrypted storage for all health surveillance records with access controls, automated retention management, and transfer capabilities that satisfy the regulation's requirements.