Article 151 ter of the French General Tax Code
The remuneration received in respect of the permanence of care exercised in application of article L. 6314-1 of the Public Health Code by doctors or their replacements established in an area characterised by an insufficient supply of care or difficulties in access to care, defined pursuant to Article L. 1434-4 of the same code is exempt from income tax up to sixty days of duty per year.