Questions About Shortmoviefilter

Help me remember a short movie

ShortMovieFilter: need help identifying and locating a quirky animated movie I saw years ago on the Internet. It's been a while, so I may be short on the details. The basic plot of the movie goes something like this. A miserable and depressed guy is working a dead-end job in a factory. When he's not working at the factory, he spends his time inventing some gizmo. Said gizmo goes public with great success, and the former factory grunt becomes a wealthy factory owner himself. The movie ends with the former grunt as the evil factory owner, and cuts to another assembly-line grunt looking similarly depressed. Again, it's been years, so I am reasonably sure that I screwed up at least some of the details. Does anyone remember this at all?