This may be true, if the employees are receiving high salaries under normal working conditions. But sometimes, the high pay is a result of insane work condition

This may be true, if the employees are receiving high salaries under normal working conditions. But sometimes, the high pay is a result of insane work conditions. For example investment bankers, lawyers in biglaw all work crazy hours and are under an immense stress from juggling multiple projects at the same time. You sacrifice your health, family, friends for earning a high salary. The turnover at those jobs are super high and the job requires a certain amount of breaking-in. In my experience (as someone working in Biglaw), high pay equals high stress, because the employers demand it.