Labour Hours vs Overhead Hours

When recording labour transactions what causes there to be a difference between the Labour Hours and the overhead hours for a specific Operation?

For most of our resource groups the actual labour hours and overhead hours shows as the same, but for 2 resource groups the hours are different - what causes this?

Many Thanks

Are you talking about the actual or estimate?


Could you check the burden hours setup for the resource group

All Resource Groups have Split Burden (our version its Split O/head)
All except two resource groups are posting labour = overhead hours.

Please check the Crew size or no resources. Basically it happens when multiple employee reports hours against an operation.