Permanent Resource - Calendar, Working Time, Overtime

Hi all,

Is there a way to numerate total working time that a resource has been allocated, with separate figures for standard working time and overtime?

Currently I have a library of resources which i regularly use. I have duplicates of resources for those that work different calendars / times, but this is a bit disorganised and the library is oversized.

To solve this i was wondering if there was a way that you can allocate standard working hours to a resource, then when allocated to a task and if the task dictates the resource is required out of these standard hours this would be shown as overtime?

Chris