Professional translation services should have translators who have training or education in specialized fields, such as law, medicine or specific areas of business. This training and education can be critical in delivering accurate translations. Some translation services specialize in specific areas, such as insurance. The translators at these firms are selected not only for their fluency and proficiency in a given language, but also for their knowledge and expertise in their field. It is often necessary to have a deep understanding of insurance to be able to translate a document such as an insurance policy.