Three Russians and a man from Turkestan were charged, including the owner of the Phuket Wakeboarding Waterpark in Kathu.
The 4pm raid was the latest move against Russian businesses and staff perceived to be taking jobs on Phuket that could be filled by Thais.
The names of those arrested today were given as the owner, Oleg Lisinov, 47, and employees Julia Solovgeva, 24, Alena Bonkaresova, 29, and Dimitri Lee, 27.
Maximum sentences involve fines of up to 100,000 baht and/or jail.
Earlier this week, arrests took place in a raid on nightspots on Patong's Soi Bangla. Most of those charged were Russians.
Complaints by Thais in the Phuket districts of Bang Tao and Karon about Russians taking jobs that should be held by Thais have led to a growing number of arrests and business closures.