Do I need to transfer my visa to a new passport if I am leaving Thailand and not returning?

Good day everyone. My partner and i are just a littler bit confused what to do. He got his new passport yesterday and his old passport was already cancelled. He got laid off from his job so his work permit was cancelled last friday but wasn’t able to get the letter of cancellation from the hr officer (she was on holiday). His visa was not cancelled but we already booked a flight to the Philippines(not coming back to thailand) this wednesday oct 21. My question is, does he still need to transfer his visa to the new passport? Or can he just show his old passport? Thank you.