Being in Europe the situation is different than the US in a number of ways.
I would agree that asking your new co-workers as well as asking the former TA are good steps.
It is a fallacy that airlines "pulled commissions for airfares." Only those not knowledgeable of the system say that. Look at airline P&L statements - still millions of dollars in commissions. For domestic travel, no commission is widely true. But definitely not for international travel.
To clarify, my experience in flying is domestic..
But, I imagine I can use a travel agent if booking internationally with tourist packages, cruises and the like.. even if the travel agent doesn't necessarily get paid for the actual flight, a TA will be paid handsomely for the balance of the itinerary..
So pure flights are paid TA commission when travelling internationally?