Quoted: UW-Madison education professor Julie Mead, who studies legal issues in the schools, said she was “not aware of research on zero tolerance policies regarding employees or the effectiveness or such policies.” Jirs Meuris, a UW-Madison professor of management and human resources, said “there’s not much research on zero tolerance in workplaces that I know of beyond some work on drug policies,” and “in that case, frequent testing and harsh penalties do deter it.”