questionnaire asks about diversity in our workforce, how do I approach this

Usually they ask for figures, not policy

Diversity questions in these lists almost always fall into two categories: hard distribution figures and policy questions. The first category is the male-female distribution within the workforce, often broken down by total, management and board of directors — these are the figures you pull from your HR system without discussion. The second category asks whether there is a policy: a diversity or inclusion policy, target figures, or measures against discrimination. You often haven't formally documented the latter, even though it does happen in practice.

If you don't have a documented policy, then "no" is the factually correct answer — not something to supplement with what you do informally, because the dossier has no source for that. Some lists also ask about diversity among suppliers or procurements; that touches on chain policy rather than your own workforce, and don't confuse the two in your answer. If the question is close to working conditions in a broader sense, then whether the staff is covered by a collective labour agreement often also comes into play, because collective labour agreements sometimes already contain equal treatment provisions that serve as substantiation.

Where this comes from: VSME basic module

The VSME basic module of EFRAG mentions the male-female distribution of staff as a standard social indicator for unlisted SMEs; that is the direct source for most diversity questions in these lists. Directive (EU) 2022/2464, the CSRD, is the underlying reason why larger customers collect this data from their chain at all: they must themselves report on social indicators of their suppliers, and that obligation is translated into the questionnaire that lands with you.