OHS Performance Monitoring

TR Method

The TR method, used in the construction industry, was the first standardised and validated safety monitoring method. Both behavioural-based and condition-based safety aspects are observed during a site walk around, and the safety index is calculated as a percentage varying between zero and one hundred.  This simple and practical method proved to be valid in predicting the accident rate of construction sites. Low TR safety index sites have an accident rate some three times higher than high index sites.

All major Finnish construction companies now use the TR Method. It is also used by safety inspectors. The impact has been dramatic. In ten years the TR safety index increased from 68% to over 90%, and the accident rate decreased from 65 to 35 accidents per million hours.


an OHS performance monitoring tool for the manufacturing industry


an OHS Monitoring tool for the construction industry