One theologian I read years ago maintained that Joseph was actually an architect/contractor, and that the Holy Family was by no means poor. In fact, they were wealthy and generously cared for the poor. According to this writer, who researched for over 28 years, Joseph brought Jesus to work with him, but Jesus was "somewhat lazy and unproductive at this work." This last piece always amused me, because I would think, well, isn't saving the world enough? ;-)