This is not a good idea. It could get you fired or a sexual harassment charge. Many companies also have a policy concerning dating fellow workers.
If you want to ask out your mom's coworker, you are just sick
It is legal for a coworker to ask for you password. You are not required to oblige that request. Also, it might be against company policy for you to oblige that request.
if it is a female coworker than yes but if male no
If the request is reasonable, and doesn't interfere with your tasks and responsibilities, help the coworker. If it does interfere with your tasks, ask a supervisor what to do.
it wouldn't be rude to ask them what their family does if you know this said coworker well. you may want to ask them over dinner of a coffee. i wouldn't just jump right in and ask them at the interview. they may think that you are to nosey and you might not get the job. so just play it by ear and see where the coworker relationship goes. hope that i helped you. you can reach me at my e-mail anytime.
Hiring that coworker
If she is married, you are screwed. If not, then it is legal to ask her out on a date. Of course one should not get too obtrusive.
She is a coworker of a relative, so what? Ask her out, like you would any other woman. Confront her and go for a coffee or something. take things slowly. I don't think she'd mind just because you are her co-worker's relative, she's still a woman afterall. If you like her, then ask her out.
ex-coworker
You can politely ask your coworker to stop whistling by approaching them in a friendly manner and expressing how the noise is distracting you. It's important to be respectful and understanding of their habits while also communicating your needs. This can help prevent any tension in the office.
ex-coworker
My coworker got promoted before I did.