employ, hire
僱 centers on taking someone into service: employing or hiring a person to do work.
僱 combines 亻 (person) with 雇, which likely contributes both sound and the idea of employment. The exact historical development of 雇 is uncertain.
A person 亻 stands beside 雇, a shape associated with hiring. Picture a boss standing next to a new employee, ready to put them to work.
For コ, imagine a company hiring a co-worker: co -> コ, and the new person joins the team.