The Ministry of Labor has started blacklisting Saudi nationals who recruited workers so that they could illegally trade their visas. Those blacklisted will be barred from receiving all services from the Ministry of Labor. This was disclosed to Okaz/Saudi Gazette by Ahmad Al-Obeid, Director General of the Labor Office in the Eastern Province. He pointed out that the Eastern Province Labor Office has blacklisted 600 Saudi nationals for visa violations. The violations include the non-existence of the business or work for which the workers were recruited, and employment in professions for which they were not recruited. Al-Obeid said that some citizens have tried to dupe the ministry by renting shops temporarily and fixing signboards indicating some business activity. However, once the visa is issued, the signboards and workers disappear, he said.