Last week the New York Times ran a long piece calling attention to school districts across the country that are having a difficult time attracting new teachers. The piece reported that many school districts are relaxing standards in order to get teachers, in some cases hiring teachers who have not yet completed their training. Others have increased the intensity of recruiting, making more effort to court good applicants. It also reported on some districts going to Puerto Rico or even Spain in search of teachers.

The one tactic that is not mentioned is higher pay. While the piece notes that many recent college grads are opting for higher-paying alternatives to teaching, it does not discuss why school districts are not raising wages as a way to pull some of these people back into teaching.

This is not the first time that we have seen assertions about labor shortages even though wages don’t appear to be growing. It is a regular theme in reporting on the economy. Times columnist Thomas Friedman has repeatedly complained that employers can’t get qualified workers due to inadequate training. Last year Slate told its readers there is a shortage of truck drivers. And The Wall Street Journal ran a long piece on the shortage of skilled workers in manufacturing.

The traditional way to attract qualified workers is to offer higher wages. This is the basic logic of supply and demand. If the price rises, or in this case the wage, then it will also increase the supply.

If it turns out there are not currently enough unemployed workers with the necessary skills, higher wages will lure qualified workers away from competitors. If a company can’t afford to pay enough to get or keep qualified workers, they go out of business. This is the way a market economy works. That’s why half of our workforce no longer works in agriculture. Workers were able to get higher paying jobs in manufacturing. This forced farmers to either use new machinery to increase productivity or face bankruptcy.

The prospect of getting higher pay in the future will also encourage more workers to acquire the necessary skills. People spend years training to be doctors because they get high wages once they have acquired the knowledge needed to be a physician. If there are not currently enough workers with the skills needed by trucking or manufacturing companies, the lure of higher pay will soon attract a more qualified workforce.