This field has different meanings depending on the 'CompensationType' value.
Compensable Amount - applies to 'Salaried', 'Commissioned', 'OwnerDraws1099' and 'Form1099' CompensationType.
Hourly Rate - applies to 'Hourly' and 'Tipped' CompensationType.
Unit Work Rate - applies to 'Piecework' CompensationType.