breach of duty
noun[CorU]
ukuspluralbreaches of dutyLAW
afailureto do something that you arelegallyresponsiblefor:
Breach ofdutyby the company'sauditorsresultedin alossof about £13m.
Thedefendantwasinbreachofdutyinfailingtoreducethenoiselevelsto whichworkershad beenexposed.