3. Pest Control Worker
Median Salary: $32,000
Poor pest controllers get paid really little money for their unpleasant job. Their duty is to help people get rid of all those ugly creatures that destroy their homes. What control workers do is incredibly important, but the worst thing is that it does not seem that their efforts are appreciated.

4. Retail Sales Person
Median Salary: $23,000
The number of retail sales positions is constantly decreasing. What it means is that people who still work face-to-face with their customers will be replaced. Computers and other devices will do what humans do right now. Nowadays retail sales people are paid low salaries. That proves that our predictions are correct.