Participates in the preparation of bid proposals and completes formal and informal bid documents. A bid proposal is a document used to outline a business's products or services when applying for a contract.In this series, an attorney with our construction law firm discusses the Sunshine State's bidding process. Conducts bid openings and reviews bid proposals. Before submitting a Bid, each Bidder must (a) examine the Bid Documents thoroughly; (b) consider federal, state and local.