Ok, I see that as a necessary and important part of the economy.

Example:
You have a company and have more work to do than you can do by yourself, so you want to offer a productive job for someone with the needed skills.

Let say there's a $100 job. You as an emloyer need to calculate the correct pay for the employee so that your company can get the job well done + get some profits. You would not pay that $100 directly to the employee, right?

You as a ceo of your company take a multiple risks running the company and it's not charity so your goal is to make some profit  and with that profit you plan to expand and employ even more people, which is very good for the economy, right?