Adult Education is a major contributing force to Lifelong Learning, as inclusive and flexible continuing education can help people adapt to the everchanging needs of labour markets and close the knowledge gap. Adult education can play a positive role to economic growth and social cohesion, by helping people become lifelong learners. In order to achieve this, adult education has to reach low skilled adults with literacy issues, upgrade competences of all adult population and offer a transparent system of recognition of competences and provide better educational programmes by ensuring the efficiency of trainers. These three challenges are examined both in the european as well as in the greek context.