Why do I need a background screen even though I already work there?

Background: Conducting pre$-$employment criminal background checks is important for mitigating risk. However, criminal background checks represent a $$snapshot in time$$ view of a person$$s criminal history. Therefore, healthcare organizations should perform continual, routine background checks on their medical staff and employees.

I work at a hospital and they already conducted a criminal background check and drug screen on me so it is not necessary for me to have another one for me to complete my Capstone where I work. $($T$/$F$)$

True

False