When Is It Time To Tell Your construction employer You're Pregnant?

I'd suggest you tell them during your second trimester. It's good that you have time to figure out a way to transfer your duties and to train someone to fill in for you. Develop a plan for accomplishing that and present it to your construction managers at the same time you tell them the news.

Be honest and straightforward; tell your construction manager you like and enjoy your job, and that your current intention is to return and pick up your duties as before. Let them know how long you intend to be out. Beyond that, you really can't do more.