Contact law encompasses a variety of types of contacts. In many cases, the rules and laws apply to all contracts. However, there are some specific laws which only apply to certain contracts.
For example, if an individual refuses to sign an updated contract, the repercussions would depend on the type of contract. In some cases, there is no recourse if individuals refuse to sign an updated contract, and the other party could in fact be charged with breach of contract if they refuse to honor the old contract.
For example, employers that distribute a new contract may request that all employees sign it. If an employee refuses to do so, they are still under the old contract. If that employee were terminated based on the new contract, the employer could be charged with breach of contract for the original contract.