Of course I've heard of it. The theory that there's a price mothers pay in the the workplace for well, being mothers. I'd never thought of it till recently. My daughter and nephew came home after schools were closed in Mid March and I'm the sole parent. Five and a half months later, they travelled to Kenya and are now staying with my sister and her family in Mombasa. In the five weeks they've been away, I have attended a 3 day off site team retreat and visited 2 branches for 5 days. I am typing this from a hotel room, on a 3 day field visit to a 3rd branch. The only way I am able to travel this extensively and for long periods is because I no longer have care giving duties. I'm lucky that my remuneration isn't directly tied to these field trips. Millions of working mothers aren't and have to make difficult choices. My heart aches for all of us.