737.22.0.13. An individual who is a foreign farm worker for a taxation year may deduct, in computing taxable income for the year, an amount not exceeding 50% of the amount by which the individual’s work income for the year, in relation to an employment, exceeds the aggregate of the amounts that the individual may deduct in computing income for the year under Chapter III of Title II of Book III and that may reasonably be attributed to that employment.