What happened
Mixed outcomes. Participants reported improvements in quality and attendance, and research traced learning from Toyota through NUMMI to GM. The plant nevertheless closed after GM’s withdrawal and Toyota’s assessment that continued operation was not viable.
- John Shook, who participated in the venture, described changes in training and management accompanied by lower absenteeism and better quality. How to Change a Culture: Lessons from NUMMI
- Knowledge developed through the Toyota–GM partnership was transferred beyond NUMMI into GM. Learning Through Alliances: General Motors and NUMMI
- Toyota announced the end of production after GM’s withdrawal, citing economic viability. TMC to End Production Contract with NUMMI in March 2010
What might explain it
Participant explanation
Changing routines and how problems receive help can change the experience that sustains workplace norms. How to Change a Culture: Lessons from NUMMI
Alternative explanation: Restart conditions, selection and economic circumstances may contribute to the reported improvement.
Plausible
Learning transfers through relationships and participation, not simply copying visible artifacts. Learning Through Alliances: General Motors and NUMMI
Alternative explanation: Training, management decisions, and formal documentation may have worked together with relationships; their separate contributions are difficult to isolate.
Understanding the outcome
Organizational learning and knowledge transfer
People learn an unfamiliar work system through what happens when they identify a problem, ask for help, or attempt a task. The daily response can change expectations more than a statement about organizational culture. How to Change a Culture: Lessons from NUMMI Learning Through Alliances: General Motors and NUMMI
The joint venture had access to Toyota’s training and GM’s organization. Another workplace would need to establish who can teach the practice and support it after training ends.
Questions to take into practice
- What changes in the daily handling of a problem?
- Can another part of the organization reproduce the practice with its own people?
What remains uncertain
- How did workers experience the changes, and how much of the reported improvement came from the work system rather than restart conditions or selection? GM’s withdrawal and Toyota’s commercial judgment also leave questions about how benefits and costs were distributed between the partners.