  We study the effects of the finite size of the baryons on the equation of
state of homogeneous hadronic matter with hyperons. The finite extension of
hadrons is introduced in order to improve the perfomance of field theoretical
models at very high densities, simulating the short-range hard-core repulsive
part of the baryon-baryon potential. We choose the Quark Meson Coupling model
to describe the baryon dynamics because this model provides a density dependent
radius of the bag. In addition we calculate finite size corrections for the
Zimanyi-Moszkowski model in order to make a definite comparison. In both cases
finite size effects are implemented through a Van der Waals like correction in
the normalization of the baryon fields. In this approach we investigate
$\beta$-stable matter in conditions that could be found in the interior of
massive stars. We find that the excluded volume corrections contribute
significantly for densities above twice the symmetric nuclear matter saturation
density, although for the quark model the results strongly depends upon the
equilibrium conditions for the confinement volume immersed in a dense medium.
