He began his career as an apprentice in the book-printing establishment of Merzbach at Posen, publisher of the Ostdeutsche Zeitung, and mastered the technique of printing in Leipzig, Berlin, and other cities.
He organized an advertising agency at Berlin, which finally extended itself to most of the larger cities of Germany, Austria, and Switzerland.
It was through his initiative that advertising supplements were added to Kladderadatsch, Fliegende Blätter, Die Gartenlaube, Über Land und Meer, and other journals.
He built a hospital in his native town, Grätz, founded an educational institution for 100 children in Wilmersdorf, a borough of Berlin, with an endowment of about 3,000,000 marks, aided in the foundation of the Emperor and Empress Frederick Hospital in Berlin, and contributed liberally toward various literary and artistic endeavors.
[2] In addition to the effects of the global Great Depression, a series of economic mistakes made by the management weakened the Mosse empire.