| Summary: | This study explores lean teams through the developmental stages of the Tuckman model. Twenty-seven interviewees commented on the teamwork of a lean programme deployed in their organisations. The results reveal that forming lean teams involves excitement, anticipation, and a desire for acceptance. However, frustration, competition, and a need for individual recognition follow in the storming phase. Training programmes that foster cooperation, compromise, and unity sometimes inadvertently create a 'them vs. us' divide in an organisation’s workforce in the norming phase. Additionally, work commitments hinder the development of shared mental models among team members. Lean teams achieve synergy, support, and goal focus in the performing phase, delivering six functions. However, challenges like prioritisation disagreements due to project overload still exist. The adjourning phase evokes mixed emotions: satisfaction with transitioning to a permanent team and sadness when the team disbands. The findings extend the Tuckman model to explain a lean team development lifecycle.
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