Private Detectives

Service occupations

Significant Points

  • Work hours are often irregular, and the work can be dangerous.
  • About 30 percent are self-employed.
  • Applicants typically have related experience in areas such as law enforcement, insurance, the military, or government investigative or intelligence jobs.
  • Keen competition is expected for most jobs despite faster-than-average employment growth.

Nature of Work

Private detectives and investigators assist individuals, businesses, and attorneys by finding and analyzing information. They connect small clues to solve mysteries or to uncover facts about legal, financial, or personal matters. Private detectives and investigators offer many services, including executive, corporate, and celebrity protection; pre-employment verification; and individual background profiles. Some investigate computer crimes, such as identity theft, harassing e-mails, and illegal downloading of copyrighted material. They also provide assistance in criminal and civil liability cases, insurance claims and fraud, child custody and protection cases, missing persons cases, and premarital screening. They are sometimes hired to investigate individuals to prove or disprove infidelity.

Private detectives and investigators have many methods to choose from when determining the facts in a case. Much of their work is done using a computer, recovering deleted e-mails and documents, for example. They may also perform computer database searches or work with someone who does. Computers allow investigators to quickly obtain huge amounts of information such as a subject’s prior arrests, convictions, and civil legal judgments; telephone numbers; motor vehicle registrations; association and club memberships; and even photographs.

Detectives and investigators also perform various other types of surveillance or searches. To verify facts, such as an individual’s income or place of employment, they may make phone calls or visit a subject’s workplace. In other cases, especially those involving missing persons and background checks, investigators interview people to gather as much information as possible about an individual. Sometimes investigators go undercover, pretending to be someone else to get information or to observe a subject inconspicuously.

Most detectives and investigators are trained to perform physical surveillance, which may be high-tech or low-tech. They may observe a site, such as the home of a subject, from an inconspicuous location or a vehicle. Using photographic and video cameras, binoculars, and cell phones, detectives often use surveillance to gather information on an individual; this can be quite time consuming.

The duties of private detectives and investigators depend on the needs of their clients. In cases that involve fraudulent workers’ compensation claims, for example, investigators may carry out long-term covert observation of a person suspected of fraud. If an investigator observes him or her performing an activity that contradicts injuries stated in a worker’s compensation claim, the investigator would take video or still photographs to document the activity and report it to the client.

Detectives and investigators must be mindful of the law when conducting investigations. They keep up with Federal, State, and local legislation, such as privacy laws and other legal issues affecting their work. The legality of certain methods may be unclear, and investigators and detectives must make judgment calls when deciding how to pursue a case. They must also know how to collect evidence properly so that they do not compromise its admissibility in court.

Private detectives and investigators often specialize. Those who focus on intellectual property theft, for example, investigate and document acts of piracy, help clients stop illegal activity, and provide intelligence for prosecution and civil action. Other investigators specialize in developing financial profiles and asset searches. Their reports reflect information gathered through interviews, investigation and surveillance, and research, including review of public documents.

Computer forensic investigators specialize in recovering, analyzing, and presenting data from computers for use in investigations or as evidence. They determine the details of intrusions into computer systems, recover data from encrypted or erased files, and recover e-mails and deleted passwords.

Legal investigators assist in preparing criminal defenses, locating witnesses, serving legal documents, interviewing police and prospective witnesses, and gathering and reviewing evidence. Legal investigators also may collect information on the parties to the litigation, take photographs, testify in court, and assemble evidence and reports for trials. They often work for law firms or lawyers.

Corporate investigators conduct internal and external investigations for corporations. In internal investigations, they may investigate drug use in the workplace, ensure that expense accounts are not abused, or determine whether employees are stealing merchandise or information. External investigations attempt to thwart criminal schemes from outside the corporation, such as fraudulent billing by a supplier.

Financial investigators may be hired to develop confidential financial profiles of individuals or companies that are prospective parties to large financial transactions. These investigators often are certified public accountants (CPAs) who work closely with investment bankers and other accountants. They might also search for assets in order to recover damages awarded by a court in fraud or theft cases.

Detectives who work for retail stores or hotels are responsible for controlling losses and protecting assets. Store detectives, also known as loss prevention agents, safeguard the assets of retail stores by apprehending anyone attempting to steal merchandise or destroy store property. They prevent theft by shoplifters, vendor representatives, delivery personnel and even store employees. Store detectives also conduct periodic inspections of stock areas, dressing rooms, and restrooms, and sometimes assist in opening and closing the store. They may prepare loss prevention and security reports for management and testify in court against people they apprehend. Hotel detectives protect guests of the establishment from theft of their belongings and preserve order in hotel restaurants and bars. They also may keep undesirable individuals, such as known thieves, off the premises.

Work environment. Many detectives and investigators spend time away from their offices conducting interviews or doing surveillance, but some work in their office most of the day conducting computer searches and making phone calls. When the investigator is working on a case, the environment might range from plush boardrooms to seedy bars. Store and hotel detectives work in the businesses that they protect.

Investigators generally work alone, but they sometimes work with others during surveillance or when following a subject in order to avoid detection by the subject. Some of the work involves confrontation, so the job can be stressful and dangerous. Some situations call for the investigator to be armed, such as certain bodyguard assignments for corporate or celebrity clients. In most cases, however, a weapon is not necessary because the purpose of the work is gathering information and not law enforcement or criminal apprehension. Owners of investigative agencies have the added stress of having to deal with demanding and sometimes distraught clients.

Private detectives and investigators often work irregular hours because of the need to conduct surveillance and contact people who are not available during normal working hours. Early morning, evening, weekend, and holiday work is common.


Most private detectives and investigators have some college education and previous experience in investigative work. In most States, they are required to be licensed.

Education and training. There are no formal education requirements for most private detective and investigator jobs, although many have college degrees. Courses in criminal justice and police science are helpful to aspiring private detectives and investigators. Although related experience is usually required, some people enter the occupation directly after graduation from college, generally with an associate or bachelor’s degree in criminal justice or police science. The 2006 educational attainment for private detectives and investigators, in percent, was as follows:


Private detectives and investigators held about 52,000 jobs in 2006. About 30 percent were self-employed, including many for whom investigative work was a second job. Around 34 percent of detective and investigator jobs were in investigation and security services, including private detective agencies, while another 9 percent were in department or other general merchandise stores. The rest worked mostly in State and local government, legal services firms, employment services companies, insurance agencies, and credit mediation establishments, including banks and other depository institutions.

Job Outlook

Keen competition is expected for most jobs despite faster-than-average employment growth.

Employment change. Employment of private detectives and investigators is expected to grow 18 percent over the 2006-16 decade, faster than the average for all occupations. Increased demand for private detectives and investigators will result from heightened security concerns, increased litigation, and the need to protect confidential information and property of all kinds. The proliferation of criminal activity on the Internet, such as identity theft, spamming, e-mail harassment, and illegal downloading of copyrighted materials, will also increase the demand for private investigators. Employee background checks, conducted by private investigators, will become standard for an increasing number of jobs. Growing financial activity worldwide will increase the demand for investigators to control internal and external financial losses, to monitor competitors, and to prevent industrial spying.

Job prospects. Keen competition is expected for most jobs because private detective and investigator careers attract many qualified people, including relatively young retirees from law enforcement and military careers. The best opportunities for new jobseekers will be in entry-level jobs in detective agencies or stores, particularly large chain and discount stores that hire detectives on a part-time basis. Opportunities are expected to be excellent for qualified computer forensic investigators.

Projections Data

Projections data from the National Employment Matrix
Occupational title
SOC Code
Employment, 2006
Change, 2006-16
Detailed statistics

Private detectives and investigators

zipped XLS

    NOTE: Data in this table are rounded. See the discussion of the employment projections table in the Handbook introductory chapter on Occupational Information Included in the Handbook.


Median annual earnings of salaried private detectives and investigators were $33,750 in May 2006. The middle 50 percent earned between $24,180 and $47,740. The lowest 10 percent earned less than $19,720, and the highest 10 percent earned more than $64,380. Earnings of private detectives and investigators vary greatly by employer, specialty, and geographic area.

Related Occupations

Private detectives and investigators often collect information and protect the property and other assets of companies and individuals. Others with related duties include bill and account collectors; claims adjusters, appraisers, examiners, and investigators; police and detectives; and security guards and gaming surveillance officers. Investigators who specialize in conducting financial profiles and asset searches perform work closely related to that of accountants and auditors, as well as financial analysts and personal financial advisors.

Sources of Additional Information

For information on local licensing requirements, contact your State Department of Public Safety, State Division of Licensing, or local or State police headquarters.

For information on a career as a legal investigator and about the Certified Legal Investigator credential, contact:

For more information about investigative and other security careers, about the Professional Certified Investigator credential, and for a list of colleges and universities offering security-related courses and majors, contact:

Source: Bureau of Labor Statistics Occupational Outlook Handbook

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