In any case, the pork is impure (najas) and thus, if it is ...
Is it allowed to work in a place where food is prepared by pork or supermarket where sells such products? And also is it ok to touch them?
1. In the confectionaries of England there are times when they use cooked pork which is a common food here, is it permissible to work in such places? Can we touch such food? 2. If one works as a cashier in a department store when a customer brings the wine or pork to pay for, can we touch it? Is it ok to work there at all?
1 and 2. If your work is exclusively related to selling pork, you are not allowed to work there. Otherwise there is no problem to work in other sections of that supermarket.
In any case, the pork is impure (najas) and thus, if it is with the moisture which gets transferred to another object, it will transmit impurity (najasat) to your body that it comes in contact with. Otherwise, if it is with the moisture which is too little to be transmitted to another object or the both (your hand and pork) have no any moisture, your hand will not become najas and then it is treated as clean.
Source: http://www.islamquest.net/en/archive/question/th21440