[gumby]

"job" measurement isn't an adequate metric as some jobs are high earners and some jobs pay so little that you need more than one just to keep your head above water. So people may be happier or unhappier than suggested by this metric.

In other words I don't think the article really addresses its own thesis.

[Mikeb85]

Yup. Also doesn't measure the fact that some people have multiple jobs, when wages go up they often ditch one. Not to mention things like labour participation rate, underemployment, etc...