On June 18th 2021 Mr. Alexander Schneider successfully defended his thesis on the subject of "The third-party effect of the trade union's freedom of association under Article 9 (3) sentence 1 of the Basic Law on the employer's domiciliary right", by means of a disputation. Mr. Schneider wrote his thesis while working as a research assistant at the IAAEU (3/2018-4/2021), under the supervision of Prof. Dr. Dr. h.c. Monika Schlachter. The dissertation will soon be published with Nomos-Publishers.