Gets list of all Earnings included in current payroll.
Earnings includes information about employees their earning items.
As earnings need to be rendered properly (for example - there is difference between different wage types) you should call Earnings Setup endpoint first.

This endpoint can be called only by System and Admin level users.

Employee call will return Forbidden result even for Employee own company.
Result doesn't include GTL-SYS and FRNG-HSA earning codes. They are reserved for system a they cannot be modified. Amounts for these earning codes are calculated automatically during the payroll according to benefits.