Wasn’t there this idea going around that we could explain business cycles through intertemporal substitution of labor supply? (Without the jargon, this means that people work less in times when they are less productive and more in times when they are more productive, so small shocks to productivity — due to random things like weather — tend to have much bigger effects on output.)
Well, it rained here on Wednesday and Thursday of last week, so my roofers spent most of the day pressed up against the garage door trying to stay dry and waiting for little breaks in the rain so they could get something done. On Saturday and Sunday, the weather was beautiful and they didn’t show up. Now it’s Monday and they’re back to work.