699. A debtor whose income consists in earnings as a self-employed worker or is received from an employer not resident in Québec must, to benefit from exemption from seizure for a portion of that income, enter into an agreement with the bailiff to pay in instalments over the period of time they determine, which may exceed the one year prescribed in article 663, or make a voluntary deposit undertaking with the court clerk. The debtor benefits from the exemption from seizure so long as all undertakings are complied with. The debtor may, to determine that income, subtract any expenses incurred to earn it.