Pennsylvania law stipulates that a power of attorney is presumed to be a durable power of attorney. As we explained in our Sept. 8, 2014, post, the authority conveyed with a power of attorney differs significantly from the authority conveyed with a durable power of attorney. The question is not really about what the agent (the person accepting the responsibility) can do. Rather, it is about how long the agent's authority lasts.
Generally, a power of attorney remains in effect up to the point that the principal (the person granting the authority) dies or becomes incapacitated. Under a durable power of attorney, the agent retains the authority during the principal's incapacity and even after the principal's death.