Abstract: On December 31, 2003, Employee #1 was engaged in the framing and decking operations for commercial construction. The construction consisted of a combination of structural steel and wood framing. Most of the horizontal structural members for the construction of the roof and the intermediate floors were wooden trusses and plywood panels. Employee #1 was installing decking using plywood sheeting. Employee #1 was walking on the second floor deck while carrying a sheet of plywood near the leading edge of the recently installed deck. The sheet of plywood under Employee #1's feet slipped away and he fell approximately 14 ft 6 in. to the concrete floor. Employee #1 stated that he thought the sheet he was stepping on was tacked down, but it was not. Employee #1 also stated that he was wearing a harness but he was not tied off because he was walking on the deck with a plywood sheet in his hands. Employee #1 suffered multiple fractures in the left leg, left wrist and left side of his face. Employee #1 was hospitalized for approximately a week.