Access: System and Admin and ClientAdmin and Employee and Manager users with access to the requested employee.

Both from and to are required ISO date query values; the endpoint does not default to the current day or current pay period.

The response contains one item per calendar day in the inclusive range, including days without reported attendance, ordered ascending by day.

When ruleId is supplied, permissions are scoped to that rule only. Unknown or non-applicable rule values are not rejected and produce no write permission for affected days.