STOP stands for DuPont's Safety Training Observation Programme, a programme aimed at preventing incidents and injuries.

The basic principle of STOP™ is that all injuries and occupational illnesses can be prevented. The main objective of the STOP™ program is to train each member of the line organization to eliminate incidents and injuries by skillfully observing people as they work, talking with them to correct their unsafe acts, and encouraging them to follow safe work practices.
STOP™ is based on a safety philosophy that consists of the following principles:

• All injuries and occupational illnesses can be prevented.
  
• Safety is everyone’s responsibility.
  
• Line leaders are directly accountable for preventing injuries and occupational illnesses.
  
• Safety is a condition of employment.
  
• Training is an essential element for safe workplaces.
  
• STOP scheduled visits must be conducted.
  
• Safe work practices must be reinforced and all unsafe acts and unsafe conditions must be corrected promptly.
  
• It is essential to investigate injuries and occupational illnesses as well as incidents with the potential for injury.
  
• Safety off the job is an important element of the overall safety effort.
  
• Preventing injuries and occupational illnesses is good business.
  
• People are the most critical element in the success of a safety and health program