For economics, it could be a good idea if you may want to go on to PhD study in economics, work in a more quantitative area of finance or some such, or just want to keep those options open.
Psychology, public policy, or other social science majors would not generally require additional math, but you may want to take a calculus-based statistics course if available, since a strong understanding of statistics is good to have. Obviously, if you want to go more in-depth into statistics or data science along with a social science major, taking the additional math courses could be helpful for more advanced statistics courses.
There are colleges that want to see a math or math-based course (e.g. physics or computer science) in your senior year.