In Canada you can't sue for pain and suffering, but you can sue for any lost labor and medical costs. I know because a mall didn't put out a wet floor sign and my mom didn't notice the floor was wet, slipped and broke her ankle. She ended up getting a settlement (which is why they can't sue you, your insurance company settles the case (or as part of settlement makes it a condition that they will not sue if there isn't a case yet)).

In the claim she filed for compensation for time off work, and for chores that she normally did that she had to pass on to others (I ended up taking over the laundry because I was at home at the time and she had a lot of trouble with stairs), but if I wasn't home she would have had to hire someone to do it. We ended up settling because the offer was better than dealing with lots of court costs plus the risk of losing.