The simple meaning of dreaming of ex colleagues or old co workers is that you will have your desires fulfilled or you will achieve success in your current endeavor.
Dreaming of fighting with ex colleagues means you will be cheated soon by someone who is showing sudden extreme love and care towards to you.
Dreaming of gossiping with ex colleagues indicates early marriage.
Dreaming of standing in queue with ex colleagues means you will get new job or will make acquaintance with new people.
Dreaming of a dead ex colleagues means you will need to be careful about all kinds of actions especially those that you are doing for others on their request.
Dreaming of laughing and playing with ex colleagues indicates get together or happy occasion in the family.
Dreaming of sitting and talking with a single old friend means you will be traveling to distant locations.
Dreaming of several ex colleagues together means you will be spoilt for choices in life soon and you might not make the correct decision.