I think that's ok, though I'd try to phrase it slightly more positively, as without more context, it could be taken as rude (like "I wish you would finish your work already, geez!").
It's always good to genuinely wish someone good luck: "I wish you luck in finishing your work quickly." That always has a supportive and positive connotation, and will convey that you are supporting/encouraging the person in their own goal.
Though "Good luck finishing your work anytime soon" would be very sarcastic and perhaps discouraging, the opposite of your intent. But that's an instance of a phrase that can be its own opposite depending on the tone and context: Good luck!
But "I wish you [good] luck" will not sound sarcastic.