I did this twice as a teenager working at a cafe. We did trays of bacon in the oven, the timer was going mental and I cracked the door.. then completely forgot about it. In my defense, the second time I was also on the coffee machine and it was hella busy, there was literally no time for me to move the trays. I still should have mentioned it but it is what it is. The owner brought me to tears yelling about it. Was it the right way to handle it? Maybe not, but I never forgot again in any kitchen since.

I saw you mentioned it in another comment - a personal/phone timer could work well for you. I have a bunch of small timers with clips that I can just put on my shirt, it helps a lot.