Labor costing in project costing 11.5.10.2

Hi All,

We are implementing project costing 11.5.10.2 for our client, and the requirement is if the employee 'A' works for 80hrs on a project in a week he will not be paid any overtime on the project and the weekly allowed time for any employee is 40hrs.

The question is even though the employee works for 80hrs per week on a project, the system should take the actual hours (80) charged for the project by the employee but it should calculate the cost only for 40hrs.  The employees are not paid any overtime.  How we can we do this using the seeded functionality in projects.