Export and R&D behavior are endogenous and interact in a non-trivial manner with each other. Subsequently an empirical model for export and R&D behavior is formulated taking account of, inter alia, firm size, wages, human capital and a number of other firm and industry specific factors. In the empirical part of the paper the model is tested on a micro data set including information for 5000 time-observations for Danish firms over the period 2001-2005.