Under what circumstances will a lawyer's letter be sent?

Legal analysis: 1, default on payment, loan and interest; 2. Civil disputes will exceed the limitation of action; 3. One party breaches the contract; 4. The performance of the contract is agreed or terminated according to law; 5, the legitimate rights and interests are violated, the need for rights protection. There are usually three ways to charge for sending lawyers' letters: one is to charge according to the number of letters sent; One is piecework plus effect commission charge; One is that piece-rate fees and legal fees are tied together.

Legal basis: Article 563 of the Civil Law of People's Republic of China (PRC) may terminate the contract under any of the following circumstances: (1) The purpose of the contract cannot be achieved due to force majeure; (two) before the expiration of the time limit for performance, one party clearly indicated or indicated by his own behavior that he would not perform the main debt; (three) one party delays the performance of the main debt and fails to perform it within a reasonable period after being urged; (4) One of the parties delays the performance of debts or commits other breach of contract, which makes it impossible to achieve the purpose of the contract; (5) Other circumstances stipulated by law. For an indefinite contract whose content is to continue to perform debts, the parties may terminate the contract at any time, but they shall notify the other party before a reasonable time limit.