High-back office chairs provide extended support for the upper back, shoulders, and neck, making them ideal for long work hours or people who suffer from tension in those areas. They often include a headrest, which is especially beneficial for taller users. Mid-back chairs, by contrast, support only the lower to mid-spine and are generally more compact—great for smaller spaces or shorter tasks. If you spend most of your day at a desk, a high-back chair can offer more comfort and better overall support. But if space or budget is tight, a well-designed mid-back office chair with lumbar support can still do the job well.