Tesla workers say the factory paint shop is a mess and fires are worse than Tesla let on from the piece Tesla has had at least four fires in the paint shop at its Fremont, California, factory since 2014, according to five people familiar with operations at that plant. One previously reported fire, in April, was serious enough to stop Model 3 production for multiple shifts that week, these people said. Another fire took place in January 2016 and caused at least a day of suspended vehicle production. Both fires damaged expensive equipment. These people blamed the fires in part on improper cleaning, maintenance and insufficient training for new employees in the face of high pressure to meet production goals. Two current employees said they were concerned about their health because of fire hazards and poor air quality. All the people agreed that the April fire contributed to slowing down Model 3 production.