Topic summary
Liable

Extracted from the Wikipedia article Legal liability.
Employer liability
An employer should also be aware on how the extent of their liability can change based on the agreements their agents make. An agent is a person who has the power to act on behalf of another party (typically the principal). Usually, a principal is liable for a contract made by the agent if the agent had actual or apparent authority to make the contract. Actual authority is the ability an agent has to pursue and complete certain activities based on communication and manifestations from the principal. Express authority is when the principal clearly states what the agent has the authority to do while implied authority is based on what is reasonable to assume that the agent is allowed to do based on what the principal wants of the agent. Express and implied authority are both types of actual authority. The second type of authority is apparent authority. This occurs when a principal's actions lead a third party to reasonably assume that the agent can act in a certain way and create contracts with the third party on behalf of the principal. To determine if an agent is liable for a contract, one must look at the type of principal. There are four types of principals. A disclosed principal is known to the third party, and the third party knows that the agent is acting for this principal. The agent is not liable on authorized contracts made for a disclosed principal since all parties are aware of the contract and who is participating in the contract. An unidentified principal is seen when the third party knows the agent is acting for a principal but lacks knowledge on the principal's identity. The agent is typically liable for contracts made for an unidentified principal. An undisclosed principal is seen when the third party does not know the principal's existence and identity and reasonably believes the agent is the other party in the contract. In this instance, the agent can be held liable for the contract. A nonexistent principal refers to when an agent knowingly acts for principal that does not exist, such as an unincorporated association. The agent is liable here if they knew the principal had no capacity to take part in the contract even if the third party knows that the principal does not exist. An agent can also bind themselves to contracts by expressly agreeing to be liable. To avoid this, agents should make no express promises in their own name and should make sure the contract only obligates the principal. An agent may also be liable to a third party if they lack the authority to contract for a principal. The agent may escape liability in this scenario if the third party knows the agent lacks authority, the principal ratifies/affirms the contract, or the agent notifies the third party of his lack of authority.