Work-related gradual process, disease, or infection


This includes changes to the body that develop slowly and progressively over time and result in personal injury, such as the effects of exposure to noise or fumes at a workplace or physical deterioration resulting from an activity carried out over the course of work (such as keyboarding). Work-related gradual process is covered under the Accident Compensation Act 2001 (section 30). When determining a gradual process claim ACC considers the following key elements:

  • whether the injury occurred over a period of four weeks or more
  • whether a characteristic of the work environment has caused the personal injury
  • whether the particular characteristic that has caused or contributed to the injury is present in the person’s non-work environment
  • whether the risk of personal injury is greater for people who work in the employment environment than those who do not.

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