Abstract: On January 20, 2004, Employee #1 and a coworker were installing drywall on the second floor of a house under construction. They were working from a scaffold plank that ran across the second floor of the house, from the master bedroom to the second floor wall near the front door entrance. The 10-inch wide plank was placed on a 3-foot drywall bench at the master bedroom side and nailed down to a 2-inch by 4-inch board on the wall side. The plank became dislodged and both employees fell approximately 10 feet 11 inches to the concrete floor. Employee #1 suffered a fractured vertebra and two fractured ankles and was hospitalized at Mercy Hospital in San Diego, CA. No fall protection was provided on the scaffold plank.