A thorough investigation is undertaken to establish if the applicant has any previous criminal history. Full details of any transgression, the dates and the sentence will be detailed in the report.
Employers generally do not assume that people applying for jobs are lying on their resumes and job applications — quite the contrary. The background check is often a final step taken by employers to help ensure a sound hiring decision and protect the employer from a number of potential risks. Employers need information, including criminal record history which would help them evaluate the honesty, character, safety and qualifications of their applicants.
Accordingly, if an employer catches a possible employee being dishonest by not disclosing a criminal record (when lawfully requested), it raises a red flag to a potential employer and should result in loss of the job opportunity.