His works included photographs for several news agencies such as ATP, DPA, ADP, UPI and Magnum Photos,[2] as well as various portfolios.
After his internship, Mayer started to work as an independent correspondent for Swiss magazines such as the Neue Zürcher Zeitung.
[5] His other works included pictures of King Hussein of Jordania[6] and portfolios from all around the world, from Vatican to Bali.
[9] He further published books about various countries, the Russian orthodox church, Chakkar Polo, Japanese theatre and the Chinese Opera.
[10] He further received a Lifetime Award from SBF, the Swiss Professional Photographers and Photo Designers Society.