OBS_VALUE: Contractual services suppliers (CSS) need a B/1 work permit. They fall under the categorisation of a foreign worker expert. B/1 work permits are valid for up to one year on first issuance. Extensions are available up to one year each time and no more than five years and three months. Since 2014, there is an in-principle approval to issue B/1 permits for a period of two years which entails that after the one-year initial duration lapses, the permit can be more easily extended for another year under the approval coverage. Note that a B/1 permit is also issued to the additional category of foreign experts arriving in Israel for short periods of up to 90 days for the performance of a temporary or provisional task. 