  We derive the width of the Higgs boson into vector bosons. General formulas
are derived both for the on-shell decay H -> VV as well for the off-shell
decays, H -> V^* V and H -> V^* V^*, where V=\gamma,W,Z. For the off-shell
decays the width of the decaying vector boson is properly included. The
formulas are valid both for the Standard Model as well as for arbitrary
extensions. As an example we study in detail the gauge-invariant effective
Lagrangian models where we can have sizable enhancements over the Standard
Model that could be observed at LEP.
