Be careful. Complaining that a question is illegal might cost you a job.

By law any question an employer asks should be directly related to ability to
do the job. Marital status, ethnicity, age, affiliations and disabilities are only
relevant if they directly hamper ability to fulfill job demands.

A candidate is free to answer any interview question: legal or illegal. Consider
the intent behind the question. A question regarding native language, which
is illegal, could be asked to determine ability to communicate clearly with
coworkers and clients. A reply that indicates fluency in the required language
would be appropriate.

Citizenship - Illegal - Are you a citizen?-- Legal -Are you legally entitled
to work in this country?

Marital status - Illegal - Are you married? Do you have children?-- Legal
- Are you able to relocate and work overtime?

Age - Illegal - How old are you? - Legal - Are you between the ages of 18
and 70?

Religion-- Illegal -What is your faith?-- Legal - Do you require leaves
of absence for religious observances?

Race - Illegal - What is your ethnic background? - Legal - None.

Handicap-- Illegal -Have you had any illnesses or surgeries?-- Legal - Can
you perform the essential duties of this job?

Affiliations - Illegal - What social groups and clubs do you belong to? - Legal
- Do you belong to any professional associations or groups relating to this j
ob's functions?

Criminal Offenses - Illegal - Have you ever been arrested? - Legal - Employers
may ask about criminal convictions on specific charges directly related to the
job function,such as fraud in the case of a financial accountant.
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