Its at quite a few companies, even the largest ones. I know Microsoft and Amazon has/had it. Microsoft limits you such that no more than, I believe, 40 - 60% of your paycheck can be redistributed to retirement accounts.
I believe Amazon does too, since they run into HCI/HCE issues all the time, famously having a low match.
Among a plethora of others. For me, this has been quite a few companies, not all of course, I don't backload mostly out of laziness using this strategy often, but its beneficial when jumping to companies with low matches partway through the year.