Success in a group is largely determined by the level of cooperation and effective communication within the group. The purpose of this study was to design interventions to improve the effectiveness of work group communication at PT. ABC used the DISC measuring instrument. This study used qualitative methods with data collection techniques in the form of interviews, observations, and questionnaires. The population sample in this study was all employees of the HCMS division, totaling 28 people. The data collection instrument in this study used a measuring instrument adapted based on the William Moulton Marston model using four key behavioral factors, namely dominance, influence, steadiness, and compliance, which consist of 24 items and are known as DISC. The results of the study show that most of the employees of the HCMS Division have a higher influence behavior than the other four key behaviors, so employees who are not included in the influence behavior will need adjustments to the group. Therefore, the researchers designed an intervention program in the form of team coaching that is expected to provide changes in the knowledge, skills, and attitudes of each group member. So the goal to improve the effectiveness of group communication can be achieved.

Group Effectiveness

DISC

Team Coaching

Intervention

Group Communication