Datuk Zaiton is an active member of the accountancy fraternity not only in Malaysia but also at the international level.  She was Vice President of the Malaysian Institute of Accountants, and Deputy Chair of the IFAC Professional Accountants in Business Advisory Group. She is the Chief Executive Officer of Malaysia Professional Accountancy Centre (MyPAC), a not-for-profit organisation she set up in 2015. MyPAC gives opportunities to students from underprivileged families to pursue professional accountancy qualifications. Datuk Zaiton was elected to the ACCA Council in 2016 and has served on the Market Oversight Committee, Audit Committee, and as Chair of the Remuneration Committee, before her election as Vice President for the 2024-2025 period.