The following earning types are supported in various APIs:

Type	Taxable to Employees	Description
`REGULAR_HOURLY`	Yes	Hourly wages classified at the "regular" (non-overtime) rate.
`OVERTIME_HOURLY`	Yes	Hourly wages classified at the "overtime" rate.
`DOUBLE_TIME_HOURLY`	Yes	Hourly wages classified at the "double time" rate.
`REGULAR_SALARY`	Yes	Wages earned by a salaried employee.
`REIMBURSEMENT`	No	Reimbursement for expenses.
`CONTRACTOR`	No	Payout to a contractor for services.
`TIPS`	Yes	Tips earned during an employee's hourly work period.
`PER_DIEM`	Yes	Amount paid to an employee as a per diem.
`COMMISSION`	Yes	Commissions earned.
`BONUS`	Yes	Bonuses earned.
`HOLIDAY`	Yes	Amount paid for hours occurring on a holiday.
`VACATION`	Yes	Amount paid for vacation hours, typically accrued or granted via a PTO policy.
`SICK`	Yes	Amount paid for sick hours, typically accrued or granted via a PTO or sick-time policy.
`ADVANCE`	Yes	Amount advanced to an employee against future wages. This amount is not automatically deducted from future wages.
`SEPARATION`	Yes	Flat amount paid to an employee as part of a separation or termination agreement.
`MILEAGE`	Yes	Mileage reimbursement.
`EARNINGS_ON_DEMAND`	Yes	Amount to be paid out "early" in a pay period.

These earning type codes can be used for either employee earnings or contractor pay, as needed, except for the CONTRACTOR code, which should only be used for contractor pay.