Comp-off cannot exceed valid balance

What it means

An employee can only redeem comp-off entitlements that are currently valid. A comp-off record is valid if it has not already been redeemed and was earned within the validity window relative to the period start date.

Why it exists

Comp-off entitlements expire. An employee who worked a holiday six months ago cannot carry that entitlement indefinitely. The validity window ensures that comp-off is used within a reasonable timeframe and prevents stale records from inflating an employee's available balance.

Example

Suppose an employee has three comp-off records:

• Earned January 1st, redeemed February 10th — already consumed, not available
• Earned January 26th, not redeemed — earned 64 days before the period start of April 1st, still within the 90-day window, available
• Earned December 15th, not redeemed — earned 107 days before April 1st, outside the 90-day window, expired

In this case, the employee has exactly one valid comp-off entitlement available for the current period. The engine will allow at most one comp_off day to be assigned, even if the employee requests more.

Parameters

Interaction with other constraints

This constraint gates typed leave must be honored exactly for comp-off requests. If an employee requests comp_off but has no valid balance, the request cannot be honored and the roster becomes infeasible.