457 visa is a temporary visa granted for up to 4 years. This visa is not points tested however you must be sponsored by an Australian based and approved business. There are also other mandatory requirements that an employer has to meet for “Standard Business Sponsorship” approval.
This visa allows you to bring your family and dependents with you and you can travel out of country as you wish. You must however work in the nominated occupation for a minimum of two years with the nominating employer. You can be in or outside Australia at the time of application lodgment Nomination is another step in seeking to obtain 457 visa. Employer must nominate the employee and offer a reasonable salary which must not be less than prescribed minimum of $53,900. Terms and conditions of employment also cannot be less than favorable than any Australian employee in the same position.
Next step is to apply for visa application. Character and health requirements must also be met for the grant of the visa.