Abstract: At 2:26 p.m. on October 15, 2011, Employee #1 was working as a supervisory mechanic for the Boat Grotto, which provided boat repair and maintenance services, in San Diego, CA. Employee #1 came to the jobsite to get his paycheck from the employer. A coworker was working there at that time. While Employee #1 was waiting for his manager to come back to the jobsite, he decided to go ahead and replace the spark plugs on a 25-foot Bayliner model 2455 boat, with hull number BL33A63SBF788. He was attempting to start the engine of the boat, but it would not start. Employee #1 was not using solvents to clean engine parts at the time, because his manager had not authorized him to work on that day. Employee #1 began complaining about his leg, adding that he was not feeling well. He called his wife to come by to the jobsite. Employee #1 was sweating so profusely that, at about 2:00 p.m., his coworker contacted the manager to tell him of Employee #1's distress. Employee #1 said that he needed to go use the rest room. As he was using the rest room, he collapsed. Employee #1's wife arrived at the jobsite and found him collapsed in the rest room. She screamed that he had no pulse and requested that emergency medical services be called. Paramedics and the San Diego Fire Department arrived about 5 to 15 minutes later. They transported Employee #1 to Alvarado Hospital in La Mesa. He was later pronounced dead from a possible aneurysm and a heart attack, as determined by the hospital. The San Diego County medical examiner took the body to perform an autopsy. Employee #1 did have preexisting medical conditions, such as high blood pressure and high cholesterol. Equipment and materials he was using included the Bayliner boat, a boat trailer, a flatbed trailer, spark plugs, and hand tools. An anonymous source reported the accident to Cal/OSHA at 4:00 p.m. on October 17, 2011. The employer reported the accident to Cal/OSHA at 10:30 a.m. on October 18, 2011.