Someone at work has bed bugs, should I treat my cubicle as a precaution?

No need to treat . Bed bugs are a global problem. These pests hitch-hikie from place to place in luggage, etc. The bed bugs don't have a way to be transported from co-worker's house to your cubicle. When traveling check your hotel for small insects the size of an apple seed in the crevices of bedding, baseboards, etc. Keep your luggage off the floor to avoid brining them home. Heat is best way to kill them.