On this tab, you can create a list of types of accruals and deductions applicable to this employment contract. 
The "Employment contract (create)" form. The Accruals and Deductions tab
Click Add to add a new line. In the Accrual (Deduction) Type column, select an accrual or deduction type applicable to the employment contract. For details, refer to Accrual and Deduction Types.
In the Amount column, enter the fixed amount to be used to calculate accruals or deductions of the type.
The Currency column is populated with currency selected for the benefit in the employment contract.
The GL Expense Account column shows the default account associated with the accrual or deduction type. You can select another account if needed. The Expense Item column is populated with the default value (Labor Costs). In the Business Activity column, select the business activity to which each accrual or deduction type is related. These parameters will be used for generating journal entries which register the expenses associated with this employee pay.