I don't know if the government of any African country have adopted the system of paying salaries in Bitcoin, but I know here is Nigeria they haven't, it's possible to pay employees using Bitcoin or other crypto currencies ,
With the services of some crypto currency payroll agencies like Bitwage,papaya global, ontop, which will make it possible for the government to pay their workers in Bitcoin or other crypto currencies and can be sent into their digital wallet,
Since it has to do with the government another agency can be set up in the country in respect to paying salaries as Bitcoin which will somehow help in the growth of the economy of the country.
I don't know if the government of any African country have adopted the system of paying salaries in Bitcoin,
You could do your research on that. As far as I know, Central Africa Republic is the only African country that has made Bitcoin a legal tender. The rest of Africa are neutral about Bitcoin.
Once you search on the internet like SatoPrincess given will show the same result. Theres nothing wrong with the payment of the bitcoin but again the market is volatile, imagine it's your payday and the market crashes instead you will receive 100% of your salary you will lose 30% because someone dumps the market, people will disagree with this if they know how does the market go rapidly up and down, adaptation and use of it is i guess enough but taking as one of the salaries for them i guess quite big game changer on the society, for sure people will still seek for the natural currency of their country.