Women who are going on maternity leave can make the announcement to coworkers with this workplace goodbye letter.
As I hope all of you have realized by now, I am nearly nine months pregnant. (If you thought it was something else, you can keep that opinion to yourself.) I am relieved and excited to tell you that I am taking an extended maternity leave from {date} to {date}.
I want to say thanks to all of you. Everyone has been very supportive and understanding and I look forward to coming back to work in a few weeks as a proud new mother.
During my absence, {Name} will be taking over my usual responsibilities. (Thanks, {Name}, you're a saint!} Please feel free to email {him/her} at {email address} if you need anything.
Wish me luck!