User wanted to filter Open/Closed Case Analysis reports by Employee to separate cases. This is possible using a Saved Case Search.
1. Navigate to Lists > Search > Saved Search > New > Case.
2. Criteria tab > Select the Employee Fields...
3. In the Employee Filter pop-up, select Type.
4. Choose to Filter any of Contractor, Exempt, Officer, Owner, Regular Employee, Statutory Employee.
5. Click Set.
6. Preview the search.
Note : Enhancement 256644 has been filed to Expose the Employee:Type field in the Open/Closed Case Analysis reports.