Have you had the same or similar jobs for multiple employers? Rather than repeating yourself in the part where you describe your responsibilities, concentrate on the quantifiable achievements in each of these positions.
First of all, because if the recruiter needs these documents, they will request them. Secondly, because in today’s context of Google and social media, the recruiter, if they need to, can check out your professional track record online and get in touch with your previous colleagues or your former boss to make their own enquiries.
In one short paragraph, highlight only the responsibilities and tasks that you accomplished that have a direct link to those that will be required of you if you are offered the position that you are applying for. A few figures often say more than a long paragraph.