Question

drug use infomation that is rightfully private and only in expectional cases can an employer claim a right to know about such. defend

Answer 1

This would have been easier to answer if you'd used appropriate capital letters and told us what you think a good defense should be.

Employers have no reason to have such confidential information unless the employee is employed in a job in which his or the safety of others would be reisked if w/he were taking illegal drugs.