Quasi contracts arise where obligations are created without a contract. In other words, they are situations where one party is obligated to another party even though there is no formal agreement between them. Quasi contracts are also known as implied-in-law contracts.

Explanation:

1. Definition of a Quasi Contract:
- A quasi contract is a legal concept that allows the court to impose certain obligations on a party even in the absence of a formal contract.
- It is based on the principle of fairness and preventing unjust enrichment.

2. Obligations Created Without a Contract:
- Quasi contracts arise in situations where one party has received a benefit from another party, and it would be unfair for the recipient to keep that benefit without compensating the provider.
- These obligations are created by law to prevent injustice and ensure that parties are treated fairly.

3. Examples of Quasi Contracts:
- Unjust Enrichment: If someone mistakenly pays for goods or services that they didn't receive, the recipient is obligated to return the payment.
- Necessaries of Life: In certain situations, when someone provides necessary goods or services to another person, the recipient is obligated to pay for them even without a prior agreement.
- Emergency Situations: When someone provides emergency medical care to an unconscious or incapacitated person, they can later claim compensation for their services.

4. Elements of a Quasi Contract:
- Benefit Conferred: The party seeking to enforce a quasi contract must have conferred a benefit on the other party.
- Knowledge: The recipient must have knowledge of the benefit received or should have reasonably known about it.
- Unjust Enrichment: The recipient must be unjustly enriched by retaining the benefit without compensating the provider.

5. Legal Remedies:
- Quasi contracts allow the party who conferred the benefit to seek remedies such as restitution, which aims to restore the parties to their original positions.
- The court may order the recipient to pay for the benefit received or provide compensation for the services rendered.

In conclusion, quasi contracts arise when obligations are created without a formal contract due to fairness and preventing unjust enrichment. They are based on the principle of preventing one party from benefitting at the expense of another party.