Zippy suggests married men should get a higher wage. Of course, whenever Zippy says, you can be sure he doesn't mind using the government to acheive his ends. Unfortunately, it's the very government that forced businesses not to do what he believes is right.
Employment as an institution which treats a father of five as a fungible productivity unit equivalent to a bachelor, or a single woman, or even a wife and mother, is a deliberate institutionalization of inhumanity. Deliberate institutionalization of inhumanity is a moral evil, so the institutionalization of equal pay for equal work is immoral.
Obviously, any institutionalizing going on here comes from the government.
Now, in a free labor market employers look for a variety of qualities in their prospective hires. They want high productivity, and believe it or not married men provide the most stable chunk of it. The young and single are capable of great paroxsyms of glory, but then they burn out, or call in Monday due to a hangover. Married men, especially those with a real wife- you know the kind that actually care about what used to be called woman's work- are much more dependable because they are really part of a team in which the first fruits of division of labor are already evident.
Todays corporation/state devalues family in favor of people devoted to the larger body. It's not a healthy situation at all, but I think this came out of the political realm as people began to realize the implication of enfranchising everyone to vote. Those in the political industry now have more power, each voter has less. As a result, voting becomes little more than a popularity contest.
Similarly, I see the same language used around working that people use about voting. Working means taking a chunk of your time and making it available to someone else. The term wage-slave may be a little blunt, but it's not wrong. Instead we hear work being described as a "fulfilling career" or some other such nonsense.
It's only in such a coercive state that such folly can be passed off as a good thing.