Using age as a reason to hire or not hire a person between the ages of 18 and 70 is illegal in New Jersey. However, that does not mean that an employer cannot ask your age or date of birth on the application or in the hiring process. Most employers will only ask age if they must ensure you are at least 18 years of age or if the job requires you to be of a certain age range, such as an actor playing a specific part. However, unless these issues play a role in the employment opportunity, most employers will avoid the question until after the hiring decision is made.