Do I need to collect the notice of filing a case for labor arbitration in person?

No, you can ask someone to collect it for you. You didn't get the admission notice when you applied for labor arbitration. Your applicant here refers to entrusting others. If a citizen is entrusted, a power of attorney shall be submitted to the arbitration tribunal in person. If you entrust a lawyer, you can go through the formalities in the law firm.

legal ground

Article 29 of the Labor Dispute Mediation and Arbitration Law

Within five days from the date of receiving the application for arbitration, the labor dispute arbitration commission shall accept and notify the applicant if it considers that it meets the acceptance conditions; If it does not meet the acceptance conditions, it shall notify the applicant in writing that it will not be accepted and explain the reasons. If the labor dispute arbitration commission refuses to accept or fails to make an award within the time limit, the applicant may bring a lawsuit to the people's court on the labor dispute.