yes
It is not illegal for your employer to ask who your doctor is. It is illegal for your doctor to give out your information without your consent. Many places of employement require a letter of recent phyical as a requirement of employment. The doctor's signature would be on the form.
Yes, if it's on going. In British Columbia, Canada when a person is off work for three days or more an employer can ask for a doctors note. It's best to get a doctors note if possible because the doctor will only tell the employer that you are being treated, but won't tell the employer what you are being treated for (patient/doctor confidentiality.)
No they can not if you have a letter from doctor
HIPAA prohibits your employer from contacting your doctor directly. The emplopyer can comple YOU to get the info from your doctor or can hire a doctopr to contact your doc.
Not if you have such signed information to give. You may have to give permission for the employer to call the doctor who prescribed it.
Not unless you work for your mother!
yes
A prospective employer
yes they can and will probably fire you.
THis question can not be answered without knowing the state. Every state has different w/c laws, some allow you to see your own doctor, some require you to see a doctor chosen by the employer, some allow you to see your doctor for a time, then switch to one required by your employer.
They can try to call them, but the doctor is not allowed to give out any information about you. The doctor might be able to say "yes s/he came in today"/"no s/he didn't come in". But the doctor is not allowed to give out the reason why you went in, since this would be a breach of the Doctor-Patient Confidentiality and therefore illegal. In summary- The doctor can say whether you have seen him/her on that day. But the doctor cannot tell the employer why, if you did, you went to see the doctor, unless the doctor has your permission to do so.
The only thing an employer should accept as evidence of a sick day is a doctor's certificate, and they are exactly for the purpose of recording that a particular doctor saw a patient at a particular time. If you are given one you have every right to check its authenticity with the doctor