References may also be required of companies seeking to win contracts, particularly in the fields of engineering, consultancy, industry and construction, and with regard to public procurement and tenders. Reference letters for organizations are used to assess its ability to deliver the required level of service.
Use standard formal letter writing conventions to begin. A letter of recommendation is like any other professional communication, and follows the same general rules and guidelines. Place your address on the top right, followed by the date—spelled out. Below that, on the left, place the recipient’s name (if known) and address. Open the letter with a formal business greeting. Ex: Dear Ms. Smith, Dear Sir or Madam, (if you don’t know the recipient’s name)