According to Wilmington News Journal, OH

A labor election is scheduled for Thursday among nearly 470 DHL employees in Wilmington. They will vote whether they want to be organized for collective bargaining by the American Postal Workers Union, by the International Brotherhood of Teamsters, or neither.

Eligible voters include all full-time and regular part-time workers employed by DHL Express Inc. at the DHL Air Park in DHL’s Gateway, International Services, and Shipment Recovery Center departments. Excluded within those departments are all office clerical employees, maintenance employees, temporary, casual and seasonal employees, and all professional employees, guards and supervisors.