Bootlegging in corporate research and development is defined as "a non-formalised and non-declared (secret) bottom-up innovation process for the benefit of the bootlegger's firm." In corporate bootlegging, an employee works on a project or projects unconnected to their "official" work, and is generally allowed to do so in the understanding that it may benefit the company in some way; however, managerial approval is not always given. David A. Schon introduced the notion of bootlegging into economics and business administration literature in 1963.