We have several mature cherry laurels in our garden and they always lose more leaves at this time of year from about July to October.One of our inherited laurels is tree sized (as tall as our house) and we are constantly picking up leaves at the moment, they are so large and leathery you can hardly see any of the under-planting after a week or so if you leave then in situ and they take a long time to break down. They do go turn to a lovely russet colour, I have carex comans and uncinia rubra as part of the underplanting and the colours tone together beautifully. Doesn’t stop me cursing though when I pick up another plastic trug full of leaves 🤔
All evergreens lose some at various times of the year @KEEPGREEN so no need to worry unduly, as Lyn says. It'sonly when there's stress of some kind that plants drop large numbers.I expect mine have dropped some too, but I haven't looked recently.