Nikolaus H. Schües joined Reederei F. Laeisz, which celebrates its 200th anniversary in 2024, in 1993. He is a member of the Presidential Committee of the German Shipowners Association, Deputy Chairman of the UK P & I Club, Member of the Norwegian Hull Club Committee and Member of the Board of Directors of the German Shipowners' Defence Association (Schutzverein Deutscher Rheder).