Seemingly random unemployment?

So I'm looking at a corp I have in a C3 country, which suddenly is starting to lose employees. I bumped the salary up, but that didn't help, so I decided to have a look at what the country is actually doing. The country has an employment index of ~52%, so one would assume finding workers wouldn't be difficult. What is even happening?

You are likely short on a type of worker. If you need 100 executives for example and you only have 50, your entire Corp will be at 50%. Check your education priorities.

C3's will reset once in a while. If all the corps in the country have low employment that's probably what happened. A salary of 320- 330 should get you the workers in a day or so. If the country has a lot of CEO corps with high employment you may want to look at their salaries.

This is true but the automatic procedure should balance the workers and the situation should be improved.

If you see more of this, please give an exact location (names) and I would like to look into it.

I initially assumed that there was a shortage of specific professions too, but the country stats seem to suggest that there's a decent number of unemployed for each profession.
The country is 'The Democratic Union of Lennox pal' on Little Upsilon