There may be a situation when you are asked the questions you don’t have to give answer to. These are illegal questions that infringe upon your rights.

Illegal question
When were you born? How old are you?
Legal alternative
Are you older than 18? Can you after being employed provide age proof?

Illegal question
Do you plan to be/are you married? How many children do you have/plan to have?
Legal alternative
Do you have any commitments that will restrict your ability to travel/meet specific schedules?

Illegal question
How tall are you? How much do you weigh?
Legal alternative
As it is part of the job, are you capable of lifting a 20 kg of weight and carry it for 50 meters

Illegal question
Do you have any disabilities? Have you undergone any medical treatment recently?
Legal alternative
Are  you able to carry out all the duties that the work implies without any additional accommodations?

Illegal question
What is your native language/citizenship? Where were your parents born?
Legal alternative
Are you authorized to work in the US? Do you have knowledge of any other language that will add to your work qualification?

Illegal question
Have you ever been under arrest?
Legal alternative
Have you ever been convicted of a ________(certain) crime. (If the crime is relevant to the future duties).

Questions about race/color/religion are all illegal. You can be asked only if you are able to work Saturdays or Sundays if the work involves that.