The MATES training intervention program is comprised of Toolbox, Supervisor, and Apprentices’ resilience training. The Australian Institute for Suicide Research and Prevention, in close collaboration with MATES developed a two-Phase evaluation strategy for the training. Results of the Phase 1 evaluation showed that the three training programs were highly effective in improving construction workers’ attitudes and knowledge in relation to issues around bullying and other related issues presented in the sessions. Statistically significant improvements were seen on all the survey questions for the Toolbox and Supervisor training evaluation, and for the majority of questions for the Apprentices’ resilience training evaluation.