 From 1673 he worked on trade and inheritance statistics in Vienna, together with Johann Joachim Becher (his brother-in-law, married to his sister Maria Veronika von Hörnigk).In 1680 he was the secretary of the count and Austrian envoy Johann Philipp Graf Lamberg in Berlin.In 1682 he published two tracts on public law, in which he severely criticized any French intentions on German territory.