"暇を持て余している人々は必然的に仕事がある人々の時間を無駄にする。"

Simplified Meaning:

When people are not busy or don't have enough tasks to do, they often end up bothering those who do have important jobs to finish. Imagine being in an office where some workers are chatting and having fun because they have nothing to do. Meanwhile, there's one person trying to meet a deadline for a big project. The people with nothing to do will likely interrupt the busy person, asking questions or making small talk, which distracts and slows down the work that needs to be completed. This can make it harder for the busy person to focus and get their job done efficiently. So, it's important to be mindful and avoid disturbing others who are working just because you have extra free time. To apply this in everyday life, try to respect other people's time by not interrupting them when they're busy and finding productive ways to use your own free time instead.