"Easier labor" usually refers to when a woman experiences less pain, discomfort, and complications during the process of giving birth to a baby. Full definition
My # 2 is due in three weeks and I'm hoping for a much easier labor this time! (mommyrunfast.com)
She looks and feels great throughout her entire pregnancy, and she has a ridiculously easy labor and delivery. (babygaga.com)
Your friends and classmates can offer a cheap and easy labor market in exchange for pay that needn't be any higher than minimum wage. (campus-to-career.com)