Lien Type Valid Values 'O' - Original Lien DOB of injured worker Notice and Request of Lien Form The Injured Worker's Attorney or Representative Reason For Exempt Valid Values '1' - This is not a lien filed under Labor Code section 4903(b) and is not a claim of costs filed as a lien. '2 - This lien is exempt from the filing fee under Labor Code section 4903.05(c) (7).