We actually have a "Post Natal Room" at work. This isn't the sign, the sing actually says "Post Natal Room".
Now, I am going to assume this is primarily a breast feeding, breast pumping room. Along with your occasional postpartum crying jag. But isn't the term "Post Natal Room" kind of... overly inclusive. Isn't any woman that has had a child in the past "post natal"? What about Dads - are they allowed in their for their crying jags when their teenagers steal the car?