My boss continually runs comprehensive background checks without authorization. What can be done?

The Fair Credit Reporting Act requires that an employer or prospective employer obtain the employee's or prospective employee's consent before obtaining a consumer credit report, which include's most type's of background check data supplied by commercial vendors.  After it obtains the report, the employer is required to provide a copy of it to the employee or prospecitve employee before it takes any adverse action against the employee and provide the employee with an opportunity to respond to any negative information contained in the report.  Damages are available for violations of this law, though lawsuits for such actions are better brought as a class action on all affected employees' belhalf.