Also, lie down on the job. Be remiss or lazy. For example, They fired Max because he was always lying down on the job. This expression alludes to lying down in the sense of "resting." [Early 1900s]
To place the body in a flat, horizontal position; recline: The dog usually lies down in front of the fireplace. After lunch, I lay down under a tree and fell asleep. I had just lain down when the phone rang.