A work proposal letter is a document, which proposes the plan or prerequisites need for any particular work. It is generally written by offices and business companies to other institutions and organizations, outlining the plan of their business. It gives an idea to the readers as to what the business is all about. Therefore, the style of such a letter is absolutely formal, though the tone should be convincing.
Sample Work Proposal Letter:
To,
Michael Hanks,
Chief Managing Director, ...