Criminal incidents -- the perpetrator has no legitimate relationship to the business or its employees and is usually committing a crime in conjunction with the violence such as robbery, shoplifting or trespassing.
Customer or client incidents -- the perpetrator has a legitimate relationship with the business and becomes violent while being served by the business.
Co-worker incidents -- the perpetrator is an employee, past employee of the business or contractor who attacks or threatens another employee.
Domestic violence incidents -- the perpetrator has no legitimate relationship to the business, but has a personal relationship with the intended victim and threatens or assaults the intended victim (family member, boyfriend or girlfriend) at the workplace. *The survey included 7.4 million business establishments in private industry, state government and local government throughout the country. Over 128 million workers were represented in the survey, which covered 12-month periods between September 2004 to June 2006, when the survey data collection period ended. Sixty-one percent of the businesses contacted responded to the survey and the results were released to the public at the end of October 2006.