Gender based violence is a widely practiced violence that often targets women and because of this unlawful act women are placed in subordinated position across the world. Gender based violence are visible in all kind of formal professions where women are involved. Likewise, women involved in health profession are victim of gender based violence. Among the different health professions, health extension work is the one where gender based violence is practiced. However, little has known so far about the gender based violence aspect of health extension workers especially in Ethiopia. Taking in to account of this knowledge gap, this study is trying to explore the types, causes and consequences of gender based violence against health extension workers at Pawe woreda. To achieve the proposed objective, qualitative research approach with case study design was employed. In the study, eleven semi structured interviewees, nine focus group discussants and nine key informants were participated. The interviewees and the focus group discussants were selected by using purposive sampling technique whereas the key informants were selected by using availability sampling technique. The collected data were analyzed by applying thematic data analysis technique. The study found out that menacing, insulting, ignoring, abjection, defamation, scoffing, ethnic based abuse, attempted rape, sexual harassment, beating, spitting, slapping, prohibition from attending training and promotion and robbery as the types of gender based violence that perpetrated against health extension workers. The underlying causes for the practice of gender based violence against health extension workers includes lack of awareness, patriarchal thinking, the shun of gotts, lack of penalty, lack of security, jealousy, alcoholism, absence of transfer and problems emanated from their personal behavior. The study also found out gender based violence has brought multiple consequences upon female health extension worker that includes psychological consequences (fear, mistrust of others, reduction of commitment to work, low work performance and interest to cease the job), physical consequences (scarring and disability and hearing problem), social consequences (social relation problem, divorce and migration) and economic consequences like cost of health care.Finally, conclusion and future direction for intervention were highlighted in line with the major findings of the study. Key words: Gender based violence, Women, Health extension worker and Pawe woreda