Layec refereed his first match in Ligue 1 in 1998 and, in 2002, became a FIFA official. He refereed his last match on the final day of the 2009–10 season and now serves as the president of the Direction Nationale de L'Arbitrage () (DNA).
Layec made his debut as a referee in Ligue 1 in 1998, and two years later became a FIFA official. He brought an end to his career with his final match on the final day of the 2009–10 season, and now leads the Direction Nationale de L'Arbitrage (DNA) as its president.