If they want to avoid causing problems for themselves, parties to a contract should bear in mind that the law interacts with contracts in various ways:
- The law determines whether the parties have an enforceable contract, as opposed to an informal, and unenforceable, agreement. (For example, in common-law systems a contract promise has to be supported by consideration or by some alternative, such as reliance.)
- By law, one or more provisions might be unenforceable. (For example, a court might be unwilling to enforce a governing-law provision if the law in question has no relation to the transaction. And a court might find unenforceable a loan agreement that provides for a particularly high interest rate.)
- The law might specify that to qualify for a particular status, a contract has to contain one or more specific provisions. (For example, for an offering of securities to qualify for one of the exemptions from registration under the U.S. securities laws, the securities purchase agreement has to include certain statements of fact.)
- “Default rules” fill in gaps in the contract. (For example, if you don’t include a notices provision, the default rules will determine how a party can give notice and when a notice will be deemed to have been received.)
- And absent contract provisions on the subject, the law will specify a party’s remedies.
That is all.