The influence of trait emotional intelligence (Trait El) on work-family conflict is important for individual difference effects in regulating emotion in work-family life. Trait El's influence on perceptions of work interfering with family (WIF) life, and family life interfering with work (FIW) performance, is of special relevance and was examined in 179 employed fathers. It was hypothesised that Trait El would negatively predict both WIF and FIW in a model containing known WIF/FIW antecedents. In addition, of the four Trait El factors (Self-control, Emotionality, Sociability and Well-being), Trait El Emotionality would predict WIF, Trait El Self control would predict FIW, and Trait El Sociability would predict both WIF and FIW, all negatively. Results confirmed the first and third hypotheses: regression analyses revealed that Trait El was negatively associated with levels of WIF and FIW, as was Trait El Self-control, indicating that fathers who are able to regulate their emotions experience less work-family conflict. Neither Trait El factors of Emotionality nor Sociability significantly predicted WIF or FIW. The implications of these findings for work-family balance are discussed. (C) 2010 Elsevier Ltd. All rights reserved.