Can't i also say "is your job busy?"

"is it busy at work" is a more literal translation

Considering there is no subject in this sentence, I think "are things busy at work" should be accepted. It's certainly a casual way in English to ask what this question is asking in Chinese...

I saw no 'you' so put 'is work busy or not?' but it was not accepted. Would this have been right?

What does it mean exactly? Is your job so demanding that you are busy all the time or are you busy working? Or something else?

what does the english phrase mean???

"Is it busy at work?" should be accepted.

If there is no actual "you" in the Chinese phrase, this is the most literal way to translate this question into English.