At work, if I had to ask someone where exactly they worked, as in where their workspace/cubicle is, what should I say? Is "where do you sit?" the usual thing to say? I'm from India and hear this phrase getting thrown around all the time. But when I look it up in context I get few results.
"Where can I find you?" is generally a safe way to ask.
If you prefer to be specific, "Where do you sit?" or "Where's your desk?" would be fine in an office with an open plan.
If the offices have dividers, you might want to ask, "Where's your cubicle?"
If actual walls, "Where's your room?" might make more sense.
"Where you sit" is definitely not standard in American English, at least not in terms of office or cubicle location.
EDIT- Per ScottM's comment, it occurs to me that the above is not entirely correct. In an open environment, where everybody is visible to everybody else, I can imagine someone looking around and asking, "So, where do you sit?" (slight emphasis on "you"), and you could respond, "Over there". Although I'm not aware of a lot of companies that work this way, I suppose it does happen. END EDIT
It is used in Miles Law:
"Where you stand depends on where you sit."
In this context, the expression is used to indicate the fact that different organizations have different outlooks and priorities, and "where you sit" describes the organization you belong to.
It's perfectly acceptable in South African English.
From the answers given thus far, it seems to be highly variable according to variety of English.
We have seem to have not acceptable in American English, except in highly specific contexts, and acceptable in Australian, South African and Indian Englishes.
This suggests that it might be a British/Commonwealth English thing.