 The remaining 50,000 are work immigrants, asylum seekers and refugees, mainly from Eritrea and Sudan, who entered Israel illegally through the Egyptian border (prior to the construction of the Egypt–Israel barrier).For those illegal residents that are working full-time, there is a mandatory health insurance by the employer.This insurance is limited as it is dependent on the continued work and payments subtracted from salary, thus becoming ineffective and practically expires as the insured becomes unemployed from health reasons.