If two people perform an action with 1/10,000 chance of death, but person A performs it once per year and person B performs it 10,000 times per year, whose life

If two people perform an action with 1/10,000 chance of death, but person A performs it once per year and person B performs it 10,000 times per year, whose life is more heavily dependent on the underlying fatality rate of the action?