The varied performance of Community Health Worker (CHW) programmes in different contexts has highlighted the need for implementation of research that focuses on programme delivery issues. This paper presents the results of process evaluations conducted on two different models of CHW programme delivery in adjacent rural communities in in Gem District of Western Kenya. One model was implemented by the Millennium Villages Project (MVP), and the other model was implemented in partnership with the Ministry of Health (MoH) as part of Kenya’s National CHW programme.