This research studies the effect of energy at work, internal-external informal communication and perceived organisational support on extra role behaviour. The population of survey included teachers (479 teachers at 25 elementary and middle schools) at The Ministry of National Education located in the Burdur in Turkey. Research method is a survey with a questionnaire and participants has been reached with the convenience sampling method. Two model (purposed and revised) was examined by structural equation model approach. According to the findings, internal informal communication increases energy at work, and therefore, energy at work has a considerably positive effect on extra role behaviour. Besides that, perceived organisational support has seriously positive effect on internal informal communication. As inferred from these findings, the increase of perceived organisational support will also increase internal informal communication, and the increase of communication will enable lecturers to be more energetic, and hence, such energy will trigger lecturers to make extra efforts for their organizations
