The Canadian Centre for Policy Alternatives is “Canada’s leading progressive research institute, and has been providing in-depth analysis of Canada’s political economy since 1980.” They regularly publish work from external contributors and early career writers and researchers. They pay external contributors $500 per article for short-form (article-length) pieces. However, since their freelance budget is limited, they typically do not compensate contributors who have day-jobs in the fields that they’re covering. To learn more, refer to this page.