Bitcoin, if widely adopted, could substitute other assets such as Gold (assuming that it's primary function is to store value). So people could buy less gold in stores, which could lead to less employment in the entire gold mining & sales industry. This could lead to a decrease in employment in the gold industry.
On the other side, more people using bitcoin will lead to more work for the entire bitcoin ecosystem; exchanges will have more transactions and need more customer support associates, tech developers. Also, more bitcoin will lead to an increase in related service, such as hardware wallets. So companies such as ledger will hire more people as well. This means more employment in the crypto industry.
From a user point of view, if people make more profit from BTC, their wealth will increase, so they will spend more and thus this will lead to more employment as well.
So overall, I think that Bitcoin will lead to more employment globally.
Yes right, the presence of bitcoin should get a good reception from all countries, by legalizing bitcoin then I'm sure many benefits are mainly gained by reducing unemployment.