Once, after noticing how hard a co-worker at a previous job was working but not always receiving credit for it, I told him, in a deadpan monotone, "Whatever you're doing, it's not enough." The co-worker picked up immediately on my deliberate irony, and for years after that, when either of us tackled the work of three people, one of us would tell the other, "Whatever you're doing, it's not enough."
I still think that's an effective way of saying, "Not everyone realizes or acknowledges how hard you work, so I will."
