  We analyze the role of electromagnetic field for the stability of shearing
viscous star with spherical symmetry. Matching conditions are given for the
interior and exterior metrics. We use perturbation scheme to construct the
collapse equation. The range of instability is explored in Newtonian and post
Newtonian (pN) limits. We conclude that the electromagnetic field diminishes
the effects of shearing viscosity in the instability range and makes the system
more unstable at both Newtonian and post Newtonian approximations.
