“An obligation is a juridical necessity to give, to do, or not to do” 1 To give something 2 To do something 3 Or to not do something  

Art. 1157 of the New Civil Code: 1.) Law 2.) Contract 3.) Quasi-Contract 4.) Delict 5.) Quasi-Delict    

1.) Obligation to pay taxes to the government  2.) Obligation to apply for business permit from the local government unit where the physical office of your business is located 3.)Obligation to support your child

1.) Contract of Sale 2.) Contract of Service 3.) Contract of Loan 4.) Contract of Transportation

states that when a person in injured and he was helped without his consent , he shall still be liable to pay for the services of the physician or other person who aided him, unless it was gratuitously given. 

when during natural calamities, such as fire, flood, storm, or other calamities, property or pieces of property was saved, the owner is bound to pay just compensation, whether or not the owner has knowledge of the act of saving.