Today is the real labor day; the one in September was an effort to disassociate the more conservative parts of the labor movement from the radical factions. May Day was relabeled as "Loyalty Day" by Eisenhower.
I'll link to this post I did on the fake labor day a couple of years ago on the nature of programming work.
Very few people in the computer industry seem to care about the unequal distribution of monetary gains in the technosphere. That some people get to be zillionaires while others slave away in cubicles seems very normal. In the heart of Silicon Valley where I work, everyone thinks they are going to get rich, and a significant enough fraction does. The open-source movement, a great idea in many ways, has only intensified the concentration of financial gain, where a few people who manage to occupy a strategic location in the system end up profiting over the unpaid work of others. Almost nobody seems to be critiquing this, but one exception is Seth Finkelstein, who focuses on how the unpaid labor of thousands of Wikipedia writers and editors has not only enriched the world, but a few individuals who get to take credit for this vast network of volunteers.
Oh well, I'm just bitter because I have managed pretty well to avoid getting rich, my interests have always either been non-commerical and/or mistimed (I had a proposal for a www-like system in 1986, a few years before the actual web took off). Luck has a lot to do with who wins in a winner-take-all economy; so does having a particular personality type. We live in a culture that worships outrageous success and disdains those whose accomplishments are modest. The genius of the labor movement was in giving a voice to the ordinary, in glorifying the mundane. Only partly successful, of course -- the dynamics that lead to inequality of status are powerful and perhaps innate to human existence; the global market economy did not invent them, it just perfectly embodies them.
The labor movement was a response to the dislocations of the industrial revolution. We are in the midst of a postindustrial revolution; new economic forms are being invented as we speak (virtualized companies, open source projects, intellectual commons...) and who knows how that's going to shake out. Nobody seems to have a very good model for how the information economy (where goods are expensive to create and free to reproduce) should relate to the everyday economy of scarcity, of things like food and energy. Open-source is creating great value for the world while the people who create it have to beg and scrounge to support their efforts. This seems wrong and unsustainable in the long term.