Workers agreed to work aboard a canning ship during the salmon canning season. The contract, signed individually by each worker, was to last for the length of time it took to sail from San Francisco, California, to Pyramid Harbor, Alaska, and back. Each worker was to receive a stated compensation. They arrived in Alaska at the height of the fishing and canning season. Knowing that every day’s delay would be financially disastrous and that it would be impossible to find workers to replace them, the workers refused to work unless they were given substantial wage increases. The owner of the canning ship acceded to their demands. When the ship returned to San Francisco, the owner paid them in accordance with the original agreement. The workers now bring suit to recover the additional amounts due under the second agreement. Will the contract be upheld?