You can't overwork a canister filter. Even if you totally stop the outlet flow, the filter's pump isn't overworked. That type of pump just stops pumping water as the outlet resistance increases, keeping the work done by the pump from ever being too much.
If you use a canister pump with a really high tank, the static pressure, the pressure inside the filter chamber, goes up, and for a really, really high tank, that could cause the filter chamber seals to leak. The filter wouldn't be harmed, but you would be (by your wife!).
If you put a restriction in the inlet to the filter you can damage the filter pump from the resulting cavitation in the pump. But, that is a lesser problem with a really high tank, since the high static pressure reduces cavitation.
I know this duplicates some of what others have said, but I can't resist an opportunity to give a lecture.