The breakup of 20Ne has been studied in the 20Ne + 54Fe reaction at 11 and 15 MeV/nucleon. Singles projectile-like fragments and correlations between projectile-like fragments and α-particles have been measured. The correlations have been analysed in terms of sequential breakup by extensive Monte Carlo simulations. The major part of the data, even at high-excitation energy, can be described by sequential decay. The large contribution of sequential decay to the inclusive yield is confirmed. Strong energy dissipation is observed, which cannot be accounted for by direct transfer or nucleon exchange.