In this paper we test for the motives for adopting golden parachutes and Anti Takeover Amendments (ATAs). Firms that exhibited financial characteristics that were associated with a greater probability of hostile raids were also more likely to adopt golden parachutes or ATAs. We also find evidence to support the hypothesis that the adoption of golden parachutes and poison pills may in fact be complement each other.
Chakraborty, Atreya, "Governance and Corporate Control: Compliments or Substitutes" (2004). College of Management Working Papers and Reports. Paper 4.