To be exact, a legally enforceable agreement is called on the facts or no contract. A contract must contain the following elements: offer and acceptance, reasonable and unconditional consideration, free consent, capacity, legitimate purpose, security, intention to create legal obligations, and the agreement should not be declared null and void. These agreements are considered business contracts: agreements that generate income, support continuing education or vocational training and set up student internships; agreements that do not include research, training or vocational or scientific training, research or training services, industrial financing, research on human or animal subjects, effort report, cost sharing, travel and entertainment, real estate credit and purchase; and agreements that do not contain conditions requiring follow-up and reporting through contract accounting and grants are treated as business contracts. This is perhaps the most common agreement used by people working in the same way in companies as in non-enterprises. It is a legal document that transfers the property or product and serves as proof of the terms of sale between the seller and the customer. These contracts are often seen as little more than a formality – but in fact they are incredibly important because the agreements protect both employers and workers. If these conditions are not effectively defined, one or both parties could be exploited without legal protection. Confidentiality Agreements (NDA) are intended to identify and protect confidential information, often signed between an organization and someone who works for it. They can take many forms, but they are often signed by employees, agencies or professionals, who have to deal with sensitive information to do their job. There are several situations in which a confidentiality agreement may apply: gifts differ from sponsored and business contracts by the fact that they are granted irrevocably and without contractual obligation. A research gift is given by a donor who wishes to support the search for a member of the Berkeley Law faculty, clinic or centre, and who, in turn, expects nothing of significant value, except for the recognition and disposition of the gift according to the donor`s wishes. Beyond periodic progress reports and summary expenditure reports, there is no formal budgetary responsibility to donors.