If a blocking clause is inappropriate, it is generally non-extended. However, in certain circumstances, the Tribunal may maintain this either through the finding of ambiguities or by severance pay. The reversion consists of the application of what is called the “blue-pencil test”; If certain words that go too far in the clause can be struck and the clause still makes grammatically meaningless without altering the nature of the undertakings, the courts may be prepared to break the illegal aspects of the clause and enforce the rest. Trade restrictions are a legal doctrine relating to the applicability of contractual restrictions on freedom of enterprise. It is a forerunner of modern competition law. In an earlier case of Mitchel v Reynolds (1711), Lord Smith said LCAfter a goodwill sale, the seller continues to enjoy the right to run a competing business. But if it is agreed by a contract that the seller will not sign in such a contract, these rights are dissolved. In this case, Thorsten Nordenfelt was a weapons manufacturer in Sweden and England. Thorsten sold his business to a company, which then sold the business to Maxim Nordenfelt. At that time, Thorsten entered into an agreement with Maxim that he would not engage in the manufacture of weapons for 25 years, except what he produced on behalf of the company. Thorsten later broke his vows and said the agreement was unenforceable because he challenged the trade restriction. The court`s decision was made by Thorsten on the back foot.
In other cases, the question was raised as to whether the deduction was necessary and incidentally necessary to obtain something unworthy of recognition, given the resulting damages. In a recently dismissed case, a court rejected an attempt to justify a restriction on competition imposed by a credit card issuer, which is reasonably necessary to promote “loyalty” and “cohesion.  As necessary and necessary for what remains such controversial questions about the teaching of Mitchel v. Reynolds. Trade restriction agreements are the agreement by which a party is agreed with another party to limit its freedom, at present or in the future, to practise a certain profession or profession with other persons who are not contracting parties, without the express agreement of the latter party, in the manner it prescribes. Limiting employment in workers` employment contracts in the form of confidentiality obligations or restrictions on employment with competitors has become part of the company`s culture. In addition to ordinary employment contracts, these agreements are sometimes included in agreements to sell business or commercial practices, exit from employment and other exclusive agreements and services. A contractual undertaking that does not act is contradicted and unenforceable because it is contrary to public trade promotion policy, unless the trade restriction is reasonable to protect the interests of the purchaser of a business.  Trade restrictions may also occur in restrictive agreements under an employment contract.