Before submitting a business document for distribution or publication, you should make sure that it communicates its message in the clearest possible way. It should be well-written in terms of its organization and appearance and it should be free of errors in terms of spelling, vocabulary, punctuation, grammar, and English usage.
Of course, you may believe that you are capable of proofreading your own work, but there is always the possibility that you may miss an error. It may be something minor, such as a misplaced comma or a poor choice in terms of a preposition. On the other hand, it may be a significant error, one which changes the meaning of a sentence or which may detract from the quality of the writing so much that your document does not properly communicate its intended message.
Professional proofreaders are editing experts. They are trained to locate and correct errors in written work and to enhance the quality of the documents that they review. Proofreaders search for technical errors, and eliminate them. They substitute superior words and phrases so as to augment the flow of the sentences in the documents that they review.
Proofreaders also examine and improve the organization and formatting of documents. This also helps to guarantee that the all-important message is communicated. A document which does not clearly present its message is a worthless document.
The last step before you submit or publish a business document should be to retain the services of a professional proofreader. The value of a proofreader is this: after he or she has reviewed and revised a document, you can be sure that it is ready for your intended audience to read.