In Korean tradition, dreaming of a colleague is read as mixed. It is most often tied to 직장, 전반.
A workmate in a dream is read less as that person and more as how you feel about them. Tradition treats it as the mind sorting out a working relationship overnight, so what matters is your position in the scene rather than who appeared.
Tradition reads the symbol as an omen; psychology reads the same dream as a mirror of your present state. Describe your dream and both readings appear together. Interpret your dream