How to enter into a contract with a vat collaborator

How to enter into a contract with a vat collaborator?
When entering into a contract with a VAT employee, it is important to keep in mind a number of aspects, including:
The nature of the employment relationship
The duration of the contract
The object of the contract
The fee
The rights and duties of the employee
The termination of the contract
The nature of the employment relationship is a key aspect to consider