ATLANTA — An Atlanta-based shipping giant is fighting a ruling over its employee dress code.

According to officials, a federal labor judge says UPS violated workers’ rights by banning union logos on safety vests.

The case involves an Atlanta delivery driver who was fired after continuing to wear a vest with union insignia.

The judge says UPS failed to show a legitimate reason for the ban, according to officials.

UPS officials says its rules protect workers and maintain a professional image. Officials add that the company says it plans to appeal.