This study aimed to expand earlier findings on burnout contagion through the application of a social network approach. This approach assumes that some relationships provide more information on the feelings and attitudes of others. Therefore, this study not only identified interaction partners, but also examined how specific characteristics (i.e., multiplexity, frequency, and embeddedness) of the relationship with those partners relate to burnout contagion. Using (temporal) network autocorrelation models, burnout contagion was empirically investigated in the context of secondary school teams. Cross-sectional analyses were performed on data obtained from 931 teachers working in 14 schools. Long-term effects of burnout contagion were assessed among 578 teachers working in 12 schools. The results showed that interpersonal interactions act as conduits for burnout contagion, especially when relations are strong in terms of frequency, embeddedness, and multiplexity. The results also showed that features of relationships play a differential role in the contagion of different components of burnout. Moreover, long-term effects were found for emotional exhaustion. Taken together this study thus provided evidence for the importance of interpersonal relationships in burnout contagion (download article).