Formal:
* तुम्ही खूप व्यस्त आहात. (Tumhi khup vyast ahat.) - This is the most literal translation and is appropriate for formal situations.
* तुम्हाला खूप काम आहे. (Tumhala khup kaam ahe.) - This means "You have a lot of work" and is also appropriate for formal settings.
Informal:
* तुम्ही खूप बिजी आहात. (Tumhi khup biji ahat.) - This is a more colloquial way to say "You are so busy."
* तुमच्याकडे खूप काम आहे. (Tumchya kade khup kaam ahe.) - This is a more informal way to say "You have a lot of work."
More idiomatic expressions:
* तुमचा वेळ खूप कमी आहे. (Tumcha vel khup kami ahe.) - This means "You have very little time," implying that you're very busy.
* तुम्ही धावत आहात. (Tumhi dhavta ahat.) - This literally means "You are running," but it's a common way to say that someone is very busy.
The best way to choose the right phrase depends on the situation and your relationship with the person you're talking to.