Is there a minimum or maximum period we can engage Establish Brazil as a PEO service provider?

We have clients who engaged us for 3 months whilst their local entities were being established. Concurrently we do have clients who have been with us form many years. However, according to the Brazilian legislation law the legal notice period for termination of employee contract is a minimum of 30 days, or longer if the agreement states this specifically, up to a maximum of 90 days - as Brazil largely follows the ‘employment-at-will’ model, meaning any party may terminate the employment agreement without cause upon providing sufficient notice and severance payment -. Thus, in case of a desire to end the service contract, the final employe has the duty to inform us at least 30 days upfront, as well to provide payment in lieu of notice for the employee.