We have revised our definition of employee lost time injuries to align our reporting in the UK and US.

Our new definition is:

'Lost Time Injury or Incident - An incident arising out of National Grid’s operations which leads to an injury where the employee or contractor normally has time off the following day or shift following the incident. It relates to one specific (acute) identifiable incident which arises as a result of National Grid’s premises, plant or activities, which was reported to the supervisor at the time and was subject to appropriate investigation.'

The change in definition means for our internal and external performance reporting, employee absences in the US that occur some time after accidents at work but where the accident was not reported or investigated at the time of occurance are now recorded as sickness absence (in line with UK reporting).

This varies from the requirements of the US Occupational Safety & Health Authority (OSHA), which requires that such absences, irrespective of the time between accident and absence, are recorded as lost time injuries.