It’s practically an article of faith that union jobs pay better. Do they? This graph (from Nate Silver’s “538” blog, based on BLS data) indicates they do. (Note: Public sector wages average more because of higher educational requirements and steady work schedules; most government jobs require college degrees and aren’t subject to the fluctuating work hours of, say, construction or manufacturing.) The issue is timely because public-sector unions are at risk in a case now before the Supreme Court. Read story here.