The phrase "lie down job" usually refers to a position that requires minimal effort and is often seen as an easy, stress-free job. In contrast, some antonyms for this phrase would include labor-intensive, physically demanding, or high-pressure jobs, such as construction work, firefighting, or emergency medical technicians. These types of jobs would require a lot of physical or mental energy and would involve high risk situations. Additionally, jobs that require constant decision-making, long hours or a high level of responsibility would also be considered antonyms for a "lie-down job." In conclusion, there are many different types of jobs that are vastly different from easy, stress-free positions.