It is illegal in Philadelphia for employers to ask about your criminal background on job applications or during a job interview. Discover how to conduct background checks in Pennsylvania while staying compliant with state and federal laws in this complete guide.It is illegal in Philadelphia for employers to ask about criminal backgrounds during the job application process. This guide describes how to apply for jobs using the Career Page web site. The process consists of the following steps: Need a Pennsylvania background check? Once hired, you must complete, sign, and submit this form within three (3) days of your hire date. The ordinance prohibits employers from asking about an applicant's criminal history on the job application form. The ordinance prohibits employers from asking about an applicant's criminal history on the job application form. Detailed instructions on how to complete the form are also included at the bottom of the CY-113 form.