Abstract: At approximately 1:00 p.m. on April 17, 2012, Employee #1 was repositioning an extension ladder from an excavation trench. A coworker was helping him. Employee #1 and the coworker lifted the extension ladder, but the ladder became stuck in the mud at bottom of the trench. As they tried to free the ladder, Employee #1 was thrown into the trench. He fell approximately 18 ft, striking his body against the structural supports of the trench shielding that was located in the excavation site. His shoulder was dislocated and he fractured his left arm and received lacerations on his head in the fall. Employee #1 was transported to a medical center, where he underwent medical procedures and was then hospitalized.