EmpPositionId

public Static HcmPositionId EmpPositionId(RecId  _RecId)
    {
        HcmPosition HcmPosition;

        HcmPositionWorkerAssignment HcmPositionWorkerAssignment;

        select  HcmPosition
   join HcmPositionWorkerAssignment where HcmPositionWorkerAssignment.Position==HcmPosition.RecId
    && HcmPositionWorkerAssignment.ValidTo>=DateTimeUtil::getSystemDateTime()
    && HcmPositionWorkerAssignment.Worker==_RecId ;

        return  HcmPosition.PositionId;
    }