Students: reserve hours in Dimona STU

The prior STU declaration must be based on a signed contract and state the planned hours for each quarter covered. Each hour started counts as one full hour. Do not declare a quarter without work or a zero-hour reservation.

Without prior STU, solidarity contribution is refused even if quota remains available. Adjust planned hours no later than the last day of the month following the quarter; after DmfA submission, a Dimona modification no longer adjusts the contingent. Reserve just enough to avoid unnecessarily blocking available hours. Reference: ONSS instructions 2026/3.