John Elward, a truck driver for United Parcel Service Inc. near San Francisco, collects labor union memorabilia. He owns at least 12 Teamsters jackets, his favorite being a green one labeled ...

The account also sometimes features celebrities, like Susan Sarandon sporting a Teamsters jacket or Gabrielle Union in one of the union’s T-shirts. Dave Kotinsky/Getty Images.

Shortly after 6 p.m., Pope walks in, sporting her Teamsters jacket, fashionably faded jeans, and brown leather boots. The men stop talking, their heads pivoting toward the door.