GOOD CAUSE TO NOT ESTABLISH PATERNITY If a mother believes that the establishment of paternity is not in her or her child's best interest, she can claim good cause for not cooperating with our office. Examples of good cause are situations where the child is born as a result of rape, incest, or sexual assault, or where the mother fears that having paternity established may bring physical or emotional harm to herself or the child. A good cause claim is filed with your Economic Support Worker, not with Child Support Agency. The Economic Support Worker will review the claim and the facts associated with it and then make a determination of whether or not to grant good cause.