Canada

Didn't join the site to download the pdf, but it looks like it is trying to find a correlation between wanting to leave the public service and answering a survey question about how often you can use your preferred language. As such, I am not sure if they have any follow up queations on why people answered what they did in the survey, but it could be as simple as they have to interact with unilingual people. Even if they have a bilingual boss (who, even at CCC may not be very good), they may not have bilingual clients or team mates and therefore have to work in one language most of the time.

IT in particular can be tricky, since most things are only English. A lot of software tools only come in English, and a big chunk of vendor support is from the US and often does not have a French option. The contractor pool is also largely English since the Canadian private sector doesn't require bilingualism for tech workers.