To inquire about employees blacklisted by the company, you can contact the company directly to ask whether to blacklist employees. Enterprises can provide relevant information or guidance. Secondly, you can view the employee's credit report. In some countries or regions, blacklisting employees may affect their credit reports. You can check the credit report to find out whether there is any negative record. Finally, if you can't get information directly from the enterprise, you can consider legal channels. In some countries or regions, employees have the right to know whether they are blacklisted and why they are blacklisted, and they can seek legal help to obtain relevant information.