Offhand I would say no. Read your employment contract.
No.
yes
Yes, you must inform your employer 30 days before you enter drug rehab. Your employer will then determine whom to hire or relocate to replace you when you are gone.
If you suspect you have failed a drug test you have the right to know the results and you can find out by calling the company or department who issued your drug test and they should be able to tell you if you passed or not.
A former employer may inform a prospective employer at his discretion.
When you fail a drug test and it's called to your doctor to verify the meds your on. Will they tell the doctor you have failed.
No
No. They are actually required by law to get your consent before drug testing you, so they have to tell you.
yes because you have to give concent
It is none of your business.
i have no idea if this even post?
i don't think so no. that's slander. and most companies aren't allowed to give negative feedback, they can either give good feedback or decline to give any. but seriously, if the previous employer told the new one that the employee failed a drug test or something, that might be allowable depending on the company, but if there is zero evidence to support the allegation it definitely is slander and personally, i'd sue them.