I'm sorry, but your impression is wrong. The biggest correlate with income is not your punctuality, not hours worked, not productivity. It is this: your parents' income. This directly contradicts the (popular) view that we live in a meritocracy where all you have to do to succeed is work hard and be smart and apply yourself.
> What I was saying was that commonly you'll find in unskilled labor jobs are people who don't show up every day.
Mind sharing the study of workplace absenteeism that you're basing that opinion on?
I correlated lack of punctuality with overrepresentation in low-wage+low-skill jobs.
There are also plenty of high-social status, skilled, low-income jobs that are thoroughly dominated by the upper classes, like college professors, journalists, rank & file media/fashion, and orchestra musicians. Those jobs are not low-skill and people in them tend to show up to work.
> What I was saying was that commonly you'll find in unskilled labor jobs are people who don't show up every day.
Mind sharing the study of workplace absenteeism that you're basing that opinion on?