Yes, wearing your tool belt for a significant period of time can hurt your back. This comes down to the fact that they have the capability to carry a variety of different tools all at the same time, and you’re carrying much more additional weight than you’re used to. That being said, many tool belts come with wide band suspenders that have the ability to evenly distribute the weight of your tools across your body, therefore supporting your back as you work. These suspenders are especially important to use when you’re working for long periods of time, as if your tools are just pulling on your lower back this can put unnecessary strain on it that could lead to injury if you’re not careful. That being said, you should be aware that you need to replace these suspenders as they become stretched over time. You should also be aware of how much extra weight you’re already carrying with your tool belt when it comes to carrying other materials such as wood. To ensure that you minimize the risk of injury while you are working, you will need to make sure that you are practising proper techniques for lifting heavy materials. This means lifting with your legs, not with your back to ensure that you are being as safe as possible.