BUFFALO — During her decade-plus at Starbucks, Michelle Eisen says she has endured her share of workplace stress. She points to the company’s increased use of productivity goals, inadequate attention to training and periods of understaffing or high turnover.But she had never encountered a change that the company made after workers at her store and two other Buffalo-area locations filed for a union election in late August: two additional “support managers” from out of state, who often work on the floor with the baristas and who, according to Ms. Eisen, have created unease.“For a lot of newer baristas, it’s an imposing force,” Ms. Eisen said. “It is not an easy job. It should not be complicated further by feeling like you’re having everything you’re doing or saying watched and listened to.”Workers and organizers involved in the unionization effort say the imported managers are part of a counte …
