Corporate security officers working in the retail industry are employed by large and small stores and shopping malls, mainly to deter theft and vandalism. They may monitor security cameras, patrol parking lots, apprehend shoplifting suspects or assist undercover store detectives with loss prevention.

Security officers who work in corporate office buildings and financial institutions are hired to guard the entrances and exits to buildings, protect employees and customers, respond to company alarms and provide general surveillance. Mobile security guards patrol areas on foot or in vehicles. They are responsible for detaining and removing offenders, and are usually in contact with others by radio, and can answer service calls or radio others for help.

Common duties throughout the corporate security world include writing daily activity reports, answering phone calls during off-hours and contacting the fire department or law enforcement during certain circumstances, such as criminal violation, fire and trespassing. They may be asked to circulate among patrons and customers, or remain at one station. They may also be required to escort certain personnel to and from events. Many jobs require individuals to spend long hours on their feet.