In response to Call center agents earns more than a call center staff.

Look at it from an executive approach.
Revenue generating assets versus Non-Revenue generating assets.

Who would you pay more? Proportionally, you'd pay your revenue generating assets more, but through incentive schemes. You're paying non-income generating staff higher salaries on the premise that they can assure you income at a staff level.

Then, qualify if you mean call center staff to mean business support, management. or actual company admin. staff (admin. assistants, hr assistants, etc.)

For outbound sales, Agents will tend to have high net take homes due to commissions and spiffs. Team Leads and Managers will have overrides (percentage of commissions if targets/quotas are hit).

Inbound can work similarly if program metrics allow for commissions/bonuses if SLAs are hit or met. As before, Team Leads and Managers will have their own incentives which are directly linked to team performance/program performance.

Your question leads to another important issue actually: compensation in relation to workload.

Just to round it up in the 'parking lot,' Going up the ladder obviously has a corresponding income increase so the issue there is if it is balanced with the workload assigned in return.

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