Hakkoki mara kyau da masu kyau su ne haƙƙoƙin da ke wajabta ko dai rashin aiki ( munanan haƙƙoƙin ) ko aiki ( haƙƙoƙi masu kyau ). Waɗannan wajibai na iya zama na shari'a ko ɗabi'a . Hakanan ana iya amfani da ra'ayi na haƙƙoƙi masu kyau da mara kyau ga haƙƙin 'yanci da mutahallin shi. Don bada misalin da ya shafi ɓangarori biyu a cikin kotun shari'a : Adrian yana da mummunan haƙƙin x akan Clay idan kuma kawai idan Clay ya hana Clay aikatawa Adrian ta wata hanya game da x . Sabanin haka, Adrian yana da tabbataccen haƙƙi don x akan Clay idan kuma kawai idan Clay ya zama dole ya yi aiki akan Adrian ta wata hanya game da x . Wani lamari mai mahimmanci, idan Adrian yana da mummunan haƙƙin rayuwa akan Clay, to ana buƙatar Clay don guje wa kashe Adrian; yayin da idan Adrian yana da tabbataccen haƙƙin rayuwa akan Clay, to ana buƙatar Clay yayi aiki yadda yakamata don adana rayuwar Adrian.