As an employer, why would you tell them?

I don't want someone to stop for a few weeks to pass a test.

As a future employee I like this too.

I know I have less of a chance working with a drug addict and I know that people making hiring decisions have common sense about something.

As an employer, why would you tell them?

I don't want someone to stop for a few weeks to pass a test.

As a future employee I like this too.

I know I have less of a chance working with a habitual drug user and I know that people making hiring decisions have common sense about something.