A masonry contractor had been contracted to construct a life center building across the road from a hospital complex. A construction laborer (victim) had been instructed by his foreman to prepare a batch of mortar on the second level of a new construction project, and carry it to the third level. The mortar was carried by pails from the second level via stairs to the third level. For some unknown reason, the victim decided to use the top section of an aluminum extension ladder (without safety feet). He placed one end of the ladder on the wet concrete floor, leaned the other end against a wall, and started to climb. The ladder apparently slipped on the wet floor causing him to fall approximately 12 feet. NIOSH investigators concluded that, in order to prevent future similar occurrences, employers and employees must: 1) ensure that ladders are used in accordance with existing safety standards; 2) instruct workers that upper sections of extension ladders should not be used as single ladders; 3) train employees in the proper use of tools and equipment needed to perform their assigned tasks; 4) designate an individual as the company safety officer to visit the various jobsites, identify potential hazards, and ensure that those hazards are eliminated.