A polygraph, commonly referred to as a “lie detector,” may be required when you apply for a law enforcement job, depending on the specific agency and job you are applying for. Jobs requiring a top-secret clearance usually polygraph during the hiring process, as do many state and local law enforcement agencies. Often job announcements will list if a polygraph is required.
Taking a polygraph is one of the most nerve-wracking parts of the law enforcement application process. It is possible for applicants who are telling the truth to appear like they are not. However, opting out of a required polygraph is not an option if you want to continue in the hiring process.
If you fail a polygraph, you must disclose that when applying to a law enforcement agency in the future, even if that agency does not require a polygraph. This may negatively impact your chance of being hired, which is why it is vital to pass the polygraph in the first “go.”