To correct your question: Is there another way to say, "when do you get off work?" To answer your question: When do you get off work, is perfect and understandable. You could say: How late do you work? When does your shift end? What time do you usually leave the office? How many hours do you work? Will you text me when you leave the office?

Did you mean: When you get out of work?

As a native English speaker in England "when do you get off work" sounds odd, as does "when are you finished with work" The most common way to ask in the UK would be "when do you finish work"

As a native English speaker in the United States "when do you get off work" would be the most common way to ask. A different way might be "when are you finished with work" or perhaps "when does your shift end". The latter is only used for a "shift" worker such as factory, restaurant, hospital, etc. Typically, people that work in a office setting do not work "shifts".