WORCESTER — Workers at the EcoTarium voted to unionize this week after a year of discussing the potential decision. The science and nature museum announced Thursday that 22 employees at the museum have voted to join the American Federation of State, County and Municipal Employees Council 93 with a 94% "yes" vote. After a three-week-long mail-in election and several months of group meetings and organizing, election results were tabulated on July 7. Rachel Quimby, EcoTarium public programs coordinator, said the museum's staff chose to unionize after a year of unsustainable work. "The staff here are some of the most talented, devoted, caring people I've ever worked with, but we weren't being supported," Quimby said. "Decisions were being made without our input, decisions we did not agree with, and there was a lot of secretive stuff happening behind closed doors that we were totally cut out of."