Does an employer have to provide a copy of an evaluation if requested by an employee?

No.  In Tennessee personnel files, and the documents therein, are property of the employer.  The employer is not required to provide copies to the employee.   This is an employment-at-will state which means you can be fired for any reason and there is no liability for the employer unless there is an unlawful motive for the action taken against you. There are generally only two forms of unlawful motives: unlawful discrimination or unlawful retaliation. Discrimination in employment is unlawful if it is due to race, color, sex, national origin, religion, disability or age 40 or older. Retaliation in employment is unlawful if you engaged in one of a handful of "legally protected" activities and were fired for engaging in that activity. If either of these was the motive for the termination, then you may have a claim for unlawful termination.  If not, then you would have no legal claim other than a claim for potential unemployment benefits.