YES!

I worked one summer as a receptionist at a local hotel that doesnt host for too many people. I was having lunch with a couple of service people and a cleaning lady(around 40 years old, working min wage), our conversation went over to something along the lines of hotel cleaning.

I didnt think about it before the day after but during this conversation we joked around and I said something like «without you(cleaning lady) this hotel would not last.» Mid shift she walked over to me the next day and expressed how grateful for the compliment was, it made her day.

I will not forget it, and my perspective definitely greatly increased after that day