Can you elect to not hire staff based on what you find?
Such as violent crime or assault based offences, as you may have a fear for the safety of your staff
Can you elect to do that providing it's not discriminatory or doesn't contravene other laws.
Not sure what the law says about your particular case, but when I am hiring I am not looking just for the best person for the job. Nope. I look at everything I think might influence my future employee. So if you fear for your own, and safety of your employees you can elect not to hire.