Advanced Accrual Allocation

This module turns a simple leave allocation into a configurable accrual plan. On the leave allocation form, when the allocation is for a single employee and the accrual option is enabled, extra fields appear: the start and end dates, the accrual method (prorate, at the beginning of the period, or at the end of the period), the allocation per accrual period with its unit, and the accrual period duration with its unit.

Three optional limits can be switched on: a maximum number of days accrued in one period, a maximum number of days carried over to the next period, and a maximum total balance. When a limit is exceeded, the system records a negative entry explaining the loss.

Every change of the balance is stored as an accruement line (days, date, reason), shown in an Accruements section on the allocation form. Employees can read their own accruements; HR officers and managers have full access.

A 'Calculate as of Date' button opens the Accrual Balance Calculator, where a date can be entered to see the accrued amount, the resulting balance and the detailed accruements up to that date. A menu entry under the HR configuration lets HR users recalculate all validated accrual allocations at once, and a server action recalculates selected ones.

The calculation uses the employee's working calendar and service period, ignoring unpaid leave and global leaves.