Though I've at times not been given receipts on some of my business trips, my employer has always allowed me to claim the expense back with a reasonably accurat

Though I've at times not been given receipts on some of my business trips, my employer has always allowed me to claim the expense back with a reasonably accurate amount, without receipt. I guess the company takes the fairly minimal tax hit by nownactually claiming it, and they allow it due to trust (and low numbers).