order and a certificate of non-forum shopping with proof of service on the other party of such appeal. A mere notice of appeal without complying with the other requisites aforestated shall not stop the running of the period of perfecting an appeal. xxx SECTION 6. BOND. In case of decision of the Labor Arbiter or the Regional Director involves a monetary award, an appeal by the employer may be perfected only upon the posting of a cash or surety bond. The appeal bond shall either be in cash or surety in an amount equivalent to the monetary award, exclusive of damages and attorneys fees. In case of surety bond, the same company shall be issued by a reputable bonding company duly accredited by the Commission or the Supreme Court, and shall be accompanied by: a) a joint declaration under oath by the employer, his counsel, and the bonding company, attesting that the surety bond posted is genuine, and shall be in effect until final disposition of the case. x x x. The necessary import of the foregoing sections, as we held in Imperial Textile Mills, Inc. vs. NLRC,[5] is that the perfection of an appealin the manner and within the period prescribed by law is not only mandatory but jurisdictional, and failure to conform to the rules will render the judgment sought to be reviewed final and unappealable. Thus, for petitioners failure to comply with the requirements on the posting of the surety bond and the submission of the joint declaration as to the genuineness of the surety bond, the Labor Arbiters Decision has become final and unappealable. Assuming we relax the rules on appeal bond and the submission of a joint declaration, still we have to deny the instant petition. Evidence shows that respondent was illegally dismissed from the service. But petitioner justifies such dismissal by invoking Section 23 of the POEA Standard Employment Contract[6] and Section 3, Article VI of the Collective Bargaining Agreement.[7] Obviously, petitioner misses the point. As found by the Court of Appeals, there is no proof that petitioner sold the vessel, thus: Petitioner did not present even an iota of evidence to prove that the vessel on which Cortina was embarked, was indeed sold. Neither did petitioner establish that the vessel was laid-up or the voyage was discontinued.