Employers conduct a variety of tests as part of the pre employment process. Some of the pre employment tests are mandated by federal and state agencies depending on the nature of the industry.

Employers hiring drivers have to conduct drug tests as part of the pre employment process. Companies in the securities industry, casinos and insurance agencies have to conduct criminal background checks for prospective employees.

Employees often conduct social security traces as part of the pre employment process. The social security trace helps identify the applicant and ascertain that he or she has been truthful about the past. Social security traces are also often done as part of the pre employment process to ferret out any criminal history related to the applicant.

For criminal history related to an applicant, employers also conduct criminal country research search, national criminal database search and criminal federal court search as part of the pre employment process. Through these searches, employers can pull up any details of criminal history.

Credit history checks are always done as part of the pre employment process. This is because employers are very weary of hiring an applicant who has considerable debt. This is a big problem especially in positions that require the applicant to handle a lot of money.

Depending on the nature of the work, employers run one of several pre employment screening tests on applicants. Some employers outsource the pre employment tests to other companies. However, most large companies do it in-house.

Pre employment screening for practitioners involved in health care is includes reports on health care fraud and abuse. Pre employment screening for health care fraud alerts employers to a possible problem at hand.

Some of the other pre employment screening tests include delving into the applicant's motor vehicle history. The motor vehicle history includes information about suspended licenses, failures to appear in court, and arrest warrants.  In addition, drug and alcohol related driving offenses that appear in the pre screening process may serve as a warning of potential substance abuse problems.

Most employers conduct pre employment screening on all applicants as part of the due diligence process. By not conducting a pre employment screening process and hiring an applicant with a criminal history, the employer becomes liable for the safety of the other employees and customers.