There is no specific rule mandating police verification for workers, as it varies depending on the country, industry, and specific job requirements. Some industries or roles that involve working with vulnerable populations, handling sensitive information, or requiring a high level of trust may have regulations or company policies in place that necessitate police verification as part of the background check process. It is essential for employers to comply with legal requirements and ensure a safe working environment for all employees. If you have concerns about police verification for workers in a particular context, it is advisable to consult with HR professionals or legal experts familiar with the relevant laws and regulations.