What is the risk of choosing MS-Access over MySQL for a small database?

What are the risks of choosing/using MS-Access over MySQL to create a small (relatively?) database for managing the academic records of staff being trained in-house (in an organisation that has a staff of 3,000 or less) for one course or the other that s aimed at increasing staff productivity.

Access to the database will be limited to the administrator of the training department and occasionally by the head of Human Resources department during staff appraisals (using the academic records as a component).

What are the risks of using MS-Access instead of MySQL for such a seemingly small database (in other words, I m asking for a kind of comparative analysis between the two)? Thanks in advance for your informative response. Most detailed answer gets my "Best Answer + 5 stars".