Entrepreneurs starting new firms face two sorts of asymmetric information problems. Information about the quality of new investments may be private, leading to adverse selection in credit markets, and entrepreneurs may not observe the quality of workers applying for jobs, resulting in adverse selection in labor markets. We construct a simple model to illustrate some consequences of new firms facing both sorts of asymmetric information. The market equilibrium can involve an excess supply of workers entering the entrepreneurial sector, as well as credit rationing. Equilibrium outcomes mismatch workers to firms, and will generally result in an inefficient number of both entrepreneurs and workers opting for the entrepreneurial sector. Taxes or subsidies on new firms and on wages can improve efficiency, but a second-best optimum can only be achieved if it is optimal to induce an excess supply of workers to enter the entrepreneurial sector.