Attorneys in the United States most often specialize in one area of cases. This way they build up experience for that type of case quicker and can narrow the breadth of knowledge they must know to make them an expert in one field. Attorneys who deal with employment matters are common. An employment contract attorney will have knowledge of any and all state specific laws, and even more precise things such as trends of employment contracts. This information is extremely useful to an individual engaging in contract negotiations, because the attorney can provide information of what similar employers are offering or requiring of similar employees to help evaluate advantages.