SLIP -is caused when there is too little friction or traction between feet and walking or working surface, resulting in loss of balance.
TRIP -is caused when a foot or lower leg hits object and upper body continues moving, resulting in loss of balance.-Stepping down to lower surface and losing balance.
FALL – occurs when a worker is  too far off center of balance and unable to balance off properly whiles working.

There are typically two types of falls
1. Fall at the same level
2. Fall to lower level

Some common Injuries caused by slip,trip or falls are
1.Sprains and Strains
2.Bruises and Contusions
3. Fractures
4. Abrasions and Lacerations

These injuries occur usually on the parts of the body such as knee, ankle or foot,wrist or elbow,back or shoulder, hip and head.

Ways to Prevent Slips, Trips and Falls
1. Where possible, avoid walking on wet/slippery surfaces; wipe off the bottom of wet footwear.
2. Use flashlights or helmet lights to stay clear of holes or floor openings, wet or slippery surfaces, and debris or equipment.
3. Do not step on any surface until you have visually inspected it to ensure there are no holes or weak spots and that it can support workers and their equipment.
4. Never carry equipment or loads in your hands when climbing ladders.
5. Wear backpacks and tool belts to hold equipment and keep both hands free.
6. Use fall protection when walking or performing emergency response activities near unprotected edges of elevated surfaces.
7. Use communication devices, particularly hands-free devices, for contacting employers/incident commanders and other workers about slip, trip and fall hazards.