Bart's professional focus is on labour law and social security law, on which he has written extensively and spoken at numerous seminars. He is regarded as one of the leading lawyers in Belgium for actively assisting employers subject to extensive audit and investigation by the various labour inspectorates. 

Who’s Who Legal: Labour & Employment 2017 has Bart listed amongst the 26 Belgian experts in Labour, Employment & Benefits Law. In 2018 he is mentioned as follows: “Bart Adriaens is a leading name in labour and social security law. He advises employers who are subject to investigations and has an in-depth knowledge of European labour inspectorates.” In the "Who’s Who Legal 2021" he is recommended as follows: With over 20 years’ experience, Bart Adriaens is singled out for being a “very strong lawyer” who excels in labour and social security law.

The 2021 and 2022 editions of Chambers and Partners mention Bart as "particularly strong on social security law matters and represents clients in investigations and employment audits." Last year, a market commentator also lauded: "He is excellent at cases against the public employment authority". In 2017 he was mentioned as follows: "Kortrijk-based partner Bart Adriaens focuses on social security law, with additional expertise in counselling clients subject to audits by the relevant authorities. With over 20 years of experience, he is also noted for his numerous publications and presentations at seminars on labour topics."

Bart began his career at the Brussels Bar and moved to the Kortrijk Bar in 1995, where he had the honour of giving the opening address to the Bar in 1996. He graduated from the University of Ghent (UGent) and is also a graduate in labour law, with a degree from the University of Brussels (ULB).