Commercial laundries sometimes refer to themselves as “launderers,” but the word is usually used now for a person who launders money, not clothes. As for someone who works in a laundry, he or she would likely be called a “laundry worker,” rather than a “launderer” or a “laundress.”

What was a laundryman?

: a man who is a laundry worker.

What is a laundry lady called?

A washerwoman or laundress is a woman who takes in laundry.