Exemption clauses aim to exempt parties from certain legal liabilities. They must meet certain standards to be valid, including being brought to the contracting parties' notice before or at the time the contract is made. The notice must also be reasonably sufficient to inform the recipient and cannot be on non-contractual documents. Courts also construe exemption clauses strictly and in favor of the recipient through contra proferentum if the clause is ambiguous. Examples are provided where exemption clauses were or were not validly relied upon based on these standards.