During the strikes of July and August 1980, Kuroń organized an information network for workers across the country. Soon after the Gdansk shipyard occupation began in August 1980, Kuron was imprisoned again, but released with other dissidents, including Adam Michnik, before the signing of the Gdansk agreement of 31 August 1980, conceding the right to form independent unions. In September 1980, he became an adviser for the Founding Committee of the "Solidarność". By this time he had changed from the ideas in "An Open Letter to the Party" of revolution and worker's organization taking over society to one of 'self limiting revolution.' On 13 December 1981 the Martial Law was introduced in Poland, and his activities were curtailed. In 1982, accused of attempts to destroy the political system, Kuroń was arrested. Two years later he was pardoned and released from prison.