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 your local Health and Safety Business Partner.
Use the consequence table below to determine the severity of the incident.
Severe injury/illness requiring life support, actual or potential fatality, greater than 250 days off work
Extensive injuries requiring medical treatment (e.g. surgery), serious or permanent injury/illness, greater than 10 days off work
Multiple medical treatments, non-permanent injury, less than 10 days off work
Single occurrence of medical treatment, minor injury, no time off work
First aid treatment, minor injury, no time off work
Use the likelihood table below to assist in determining the likelihood of the incident occurring or re-occurring.
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 risk rating in the table below to assist in prioritising actions and associated time frames:
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