The Labour Market Regulatory Authority has surveyed 1,528 illegal foreign workers in 25 companies. These include 990 with expired work permits and 309 whose licences had been abrogated.
A total of 229 runaway expatriate workers identified by LMRA inspectors will be referred to the Public Prosecution.
In a separate case, the inspectors surveyed 146 illegal workers employed by a major company who were referred to the Public Prosecution.
The LMRA inspection campaign targets companies and enterprises employing more than 100 expats.
The inspectors have also surveyed 283 illegal foreign street vendors.
The LMRA officials co-ordinated the crackdown with Labour, Interior and Municipalities and Agriculture ministries.
A group of 235 illegal workers have also been arrested and deported from Bahrain in co-ordination with the Public Prosecution and the General Directorate for Nationality, Passports and Residence.
Another batch of 52 expatriates has also been deported in co-ordination with their respective embassies. Legal procedures are underway to deport 1,026 others.