Work groups

More than 585,000 Postal Service employees — or about 91 percent of the organization’s total workforce — are members of a bargaining unit.

To help mark Labor Day, here’s a look at the eight bargaining units represented in USPS and the approximate number of employees they cover:

• National Association of Letter Carriers (NALC): 207,000

National Postal Mail Handlers Union (NPMHU): 52,000

• National Rural Letter Carriers’ Association (NRLCA): 131,000

Postal Police Officers Association (PPOA): 370

American Postal Workers Union (APWU): 195,000

National Postal Professional Nurses: 50

Additionally, these bargaining units fall under the purview of the APWU, with separate national agreements:

Information Technology/Accounting Services: 1,000

Human Resources Shared Service Center: 300

The Labor Relations Blue page has more information.