The study aimed to determine the effect of the implementation of the program "Manage your Talent" on assertive communication and teamwork competences. A quasi-experimental research design was used with pretest - intervention - post-test with control group. The sample included 28 supervisors from a private company, 13 in the experimental group and 15 in the control group. A type of purposive sample was used. The results suggest a positive impact of the program to significantly increase the achievement of assertive communication competences (U = 3.5, Z = 4.58, *** P <0.000), similarly, in the dimensions Effective Dialogue (U = 8.0), Feedback (U = 10.0), Conflict Resolution, the skills with the highest increase were effective dialogue and non-verbal communication. In the rest of them, the increase was lower. Regarding teamwork competence (U = 0.00, Z = 4.837, *** P <0.000), in the dimensions Establishment of the Topic (U = 9.0), Goal Achievement (U = 15.0), Democratic Environment (U= 12.0) and Decision-Making (U = 7.0), the skills with the highest increase were Establishment of the Topic, Democratic Environment and Goal Achievement. Decision-making for Consensus Management had a lower increase.