The Harada clan successively inherited the posts of Dazai no Daigen and Shogen (Junior Inspector of Dazai-fu) (the third highest rank official of Dazai-fu in charge of military and police affairs in the area).
代々大宰府の現地任用官最高位の大宰大監・少監（大宰府の第三等官・管内の軍事警察を管轄）を世襲する。