  The Monodromy Conjecture asserts that if c is a pole of the local topological
zeta function of a hypersurface, then exp(2\pi i c) is an eigenvalue of the
monodromy on the cohomology of the Milnor fiber. A stronger version of the
conjecture asserts that every pole is a root of the Bernstein-Sato polynomial
of the hypersurface. In this note we prove the weak version of the conjecture
for hyperplane arrangements. Furthermore, we reduce the strong version to the
following conjecture: -n/d is always a root of the Bernstein-Sato polynomial of
an indecomposable essential central hyperplane arrangement of d hyperplanes in
the affine n-space.
