The Enquirer understands that up to 12 staff are currently under consultation for redundancy.
It is understood that the trade body has suffered a drop in membership while its training organisation has been hit by a delay in government funding.
The restructure follows an extensive review period dating back two years to the appointment of current chief executive Paul McLaughlin.
BESA will now focus more on training while its technical services team has borne the brunt of the cuts.
He said: “In an ever-changing trading environment, it is important that we continually review our strategy.
“A strategic review of activities has been undertaken to ensure that the Association is focussed on providing the products and services that most add value to members, and that these are delivered in the most efficient way possible.
“We are sorry that these strategic decisions have impacted directly on specific roles within the business.
“However, difficult decisions come with the territory and, at a time of considerable economic uncertainty, it is crucial for the long-term success and prosperity of BESA and its members that we focus our resources in the areas where they can make most difference.”