Kammala jumla mai zuwa: A cikin 1924 an nada Davies babban mai shirya SWMF kuma mai ba da shawara kan shari'a, kuma an zabe shi mataimakin shugabanta. Ya kuma yi aiki a matsayin wakilin Kudancin Wales a kwamitin zartarwa na MFGB daga 1924 zuwa 1934. A lokacin Mayu 1926
Janar yajin aiki, da kudancin Wales miners kasance daga cikin mafi m goyon bayan da mataki. Lokacin da yajin aikin ƙasa ya rushe bayan kwanaki tara, Davies ya jagoranci ci gaba da juriya daga filayen kwal na Welsh ta hanyar watanni na kullewa, kafin mika wuya a kan mawuyacin yanayi a watan Disamba. Dowlais shi ne gundumar da ta dawo aiki a karshe. Lokacin da ya biyo bayan 1926 ya kasance yana fama da rikice-rikice tsakanin 'yan gurguzu da wadanda ba' yan gurguzu ba a cikin filayen kwal. Davies da sauran wadanda ba 'yan kwaminisanci ba sun sami kansu ana zargin su da yin aiki tare da "social fascism"; wata takarda da 'yan kwaminisanci ke jagoranta ta National Minority Movement ta fitar da shi ta kira shi "mai gwagwarmayar yaudara". Duk da haka, ya ci gaba da aiki don haɗin kai tsakanin dukkan bangarorin hagu. Bayan da Hitler ya hau mulki a Jamus a 1933, Davies ya yi jayayya don haɗin kai a kusa da Jam'iyyar Labour, yana gaskanta cewa matsayin ILP na ƙara hagu, da kuma sadaukar da Jam'iyyar Kwaminis ga juyin juya halin tashin hankali, na iya haifar da yanayin fasikanci. A cikin 1931 an zabi Davies zuwa Majalisar Tattalin Arziki ta Merthyr Tydfil.