v. phr. , informal To purposely fail to do your job; neglect a task; loaf. Bill isn't trying to learn his lessons. He is lying down on the job. If you lie down on your job, you will lose it.
LIE DOWN ON THE JOB
Meaning of LIE DOWN ON THE JOB in English
American idioms English vocabulary. Английский словарь американских идиом. 2012