// this is in the global scope of my program. normally accepted as bad code, 
// but it seems to make sense in the context of an embedded platform.
// "global" cache
...

begin
    if @user.valid?

...

private static HumanResource CompressTimesheetItems(HumanResource employee)
{
	List<TimesheetItemObject> CompressedTimesheetItems = new List<TimesheetItemObject>();
...