The Internal Relations Department is led by IR Director, Phua Hui Shan.

The Internal Relations Department hosts bonding events for members of MBS to interact with one another and forge stronger and closer bonds across the departments. Internal Relations aims to build teamwork and camaraderie through these events, hopefully promoting interaction and friendship between members across the various departments. This is to allow members to foster a strong sense of connection and belonging to the club, making sure  they have the most enjoyable journey in MBS.