This article explores climate policy targets and their economic impacts. It suggests that the EU should reduce emissions by 20-40% by 2020. Studies show that strict carbon rules can boost global and regional economies with negligible growth differences. However, concerns linger about uneven cost distribution. If only some regions adopt climate measures, industries may lose competitiveness, leading to job losses. To prevent this, protective policies are recommended to safeguard jobs, prevent opposition to climate rules, and stop carbon moving to other nations. Such measures have pros and cons in balancing economic and environmental goals.