Recently an employee asked me how to file a complaint against HR if they couldn't actually go to HR to report the complaint. I am in the payroll department and would like to help this employee out only by giving them proper information. Please ad

Recently an employee asked me how to file a complaint against HR if they couldn't actually go to HR to report the complaint. I am in the payroll department and would like to help this employee out only by giving them proper information. Please advise? Thank You.