If you were to open a packet of cooked ham slices and they were wet, is that a bad sign? Are they gone bad? Is it ok to eat them?
Extra water in cooked ham is 100% fine to eat, see here. In general, you can use the printed "use by" date if you're in the US and you'll be safe. I'm adding my answer to provide an authoritative source for you, so you'll know for certain you won't get sick from it.
Quotation, for @adamlynch:
HAM: In order to be labeled as "Ham," the product must be at least 20.5% protein in lean portion as described in 9 CFR 319.104. Added water is permitted in a product labeled as "Ham." In fact, water will be declared in order of predominance in the ingredients statement. This is how the cure solution is introduced into a ham.
HAM AND WATER PRODUCTS X% of Weight is Added Ingredients: Product contains more additives than a "Ham Water Added," but the product name must indicate percent of "added ingredients." For example, "Ham and Water Product 25% of Weight is Added Ingredients" for any canned ham with less than 17.0% protein.
As you can see, water added to ham is perfectly safe to eat, as it's normal for it to be present in the ham.
It is true water is added, but I beleive in USA only a certain percentage it allowed. It can also be a sign that the packages was almost if not completely frozen. When that happens, defronsting forces out the water. I just wrap the entire stack in paper towels and let it sit on a plate for a few minutes to draw out the extra water.
Chances are it is fine, but always use your nose and follow my simple philosophy... When in doubt, throw it out. It's much cheaper than getting food poisoning.