To bring a case to court, it seems obvious that you must have some kind of legal basis for your claim. For a personal injury case, that could mean that someone else caused you to slip and fall; you slipped because the floor was wet. In that type of case, someone else had a duty to keep the floor clear from slippery things, and they did not follow through on that duty. Because of their lack of follow-through, you can likely bring a case to court so that the person that failed to keep the floor clear of slippery things will be responsible for their actions. However, if you slipped in your own house because your son spilled on the kitchen floor, you are very unlikely to have a case against your ten-year-old son.
While the explanation seems simple, it is not in many cases. The law is filled with qualifications and loop holes. In the previous example, you cannot bring a case if no one had a duty to keep the floor clear from slippery things. In personal injury cases, there needs to be a duty to create liability.
There are also time, place, and manner restrictions in bringing lawsuits as well. The classic example is restricting work injuries to worker’s compensation claims. Generally, if you are injured while at work, then you do not file a separate lawsuit, you file a worker’s compensation claim. It is similar to an in-house procedure for taking care of injury claims. Worker’s compensation is an insurance that the employer uses so that they cannot be sued in the regular courts. It provides damages in the form of wage replacement and medical expenses. Therefore, if you tried to bring a case for being injured while you are at work to a normal courtroom, you would likely be dismissed because the worker’s compensation program should be handling your claim, not the court.