Personally I don't support current anti-discrimination laws but I think they have more justification than what you are proposing. Race, gender, religion etc. a

Personally I don't support current anti-discrimination laws but I think they have more justification than what you are proposing. Race, gender, religion etc. are categories that one the one hand don't have an inherent relationship to a person's ability to do their job, and on the other hand, are things that are either beyond a person's control, or we value a person being able to choose freely. In comparison, convictions are within a person's control (except false convictions), and we certainly don't value protecting this "choice". There is the issue of discrimination in the justice system, I don't see how this could be addressed except for reforming the justice system especially in relation to drugs. And there is a clear relationship between past convictions and whether a person is suitable for a job. It relates directly to that person's moral character and attitudes towards crime that could directly impact their behavior as an employee.