Incident reporting risk matrix

Likelihood and Consequences

If you are a supervisor responding to an incident in ERMS, you will be asked to enter the Likelihood and Consequence of the incident, in order to assign a Risk Rating. This page provides a quick reference for the meaning of each option you can choose.

Need more help or information, talk to someone for advice.

  • Consequence definitions

    Use the consequence table below to determine the severity of the incident.

    Consequences Types
    Serverity Level Description
    Severe

    Severe injury/illness requiring life support, actual or potential fatality, greater than 250 days off work

    Major

    Extensive injuries requiring medical treatment (e.g. surgery), serious or permanent injury/illness, greater than 10 days off work

    Moderate

    Multiple medical treatments, non-permanent injury, less than 10 days off work

    Minor

    Single occurrence of medical treatment, minor injury, no time off work

    Insignificant

    First aid treatment, minor injury, no time off work

  • Likelihood definitions

    Use the likelihood table below to assist in determining the likelihood of the incident occurring or re-occurring.

    Likelihood (Probability)
    Description Probability of occurance (expected to occur)
    Almost certain

    Will occur in most circumstances when the activity is undertaken

    >90%

    Likely

    Will probably occurin most circumstances when the activity is undertaken

    51-90%

    Possible

    Might occur when the activity is undertaken

    21-50%

    Unlikely

    ould happen at some time when the activity is undertaken

    1-20%

    Rare

    May happen only in exceptional circumstances when the activity is undertaken

    <1%

  • Risk rating calculation

    ERMS will automatically calculate the Risk Rating from the consequence and likelihood ratings, using the table below.

  • Risk rating priority for action

    Use the likelihood table below to assist in determining the likelihood of the incident occurring or re-occurring.

    Risk Rating Priority for Action
    Risk acceptance guide Action Recommended action time frame
    Extreme

    Not acceptable

    Cease or isolate source of risk

    Immediate

    Implement further risk controls Up to 1 month
    Monitor, review and document controls Ongoing
    High

    Generally (in most circumstances) not acceptable

    Implement risk controls if reasonably practicable

    1 to 3 months

    Monitor, review and document controls Ongoing
    Medium

    Generally (in most circumstances) acceptable

    Implement risk controls if reasonably practicable

    3 to 6 months

    Monitor review and document controls Ongoing
    Low

    Acceptable

    Monitor and review

    Ongoing