Omicron gives back through philanthropy events on USC's campus (both by hosting events, and participating in events hosted by USC fraternities), and through ongoing service activities in the L.A. community.

Omicron's signature philathropy events include Kat at Bat (a whiffle ball tournament in Spring) and Theta Late Night (a late-night outdoor party in Fall). Both events raise more for Court Appointed Special Advocates (CASA) and the Kappa Alpha Theta Foundation. Omicron's involvement in community service activities spans many organizations, and members are constantly finding new causes they are motivated to support.