Objective: We conducted two workshops to encourage “Jinsei Kaigi” to discuss advance care planning (ACP) with family members or significant others during healthy times and evaluated whether the workshops were effectively motivated participants to engage in ACP. Methods: Two workshops were held with 171 welfare commissioners, and four surveys were conducted (T1-T4) before and after the workshops. The primary endpoint was the rate of “Jinsei Kaigi” implementation, and the secondary endpoints were the Japanese versions of the ACP Engagement Survey (ACPES-J), which measures readiness for ACP, and Death Attitude Inventory (DAI), which were compared before and after the intervention, with T1 VS. T4 as the primary analysis. Results: A total of 149 participants were analyzed, and the implementation rate was 38.3%, which was a significant increase from 6% before implementation (p<.001, w=.54). Self-efficacy, readiness, and ACPES-J total scores increased significantly (p<.001 to .031, d=.29 to .67, respectively), but there were no significant changes in DAI. Conclusion: Our results suggest that workshops provide opportunities to motivate engagement in “Jinsei Kaigi”.