Paying individual salary using bitcoin may be a distant future, a major thing, but it is not worth it now.

Income tax and resident 's tax are taxed on Japanese salary.
Comprehensive maximum 55%! .
Because bitcoin is progressive taxation, even if the salary is low, taxation will increase if the bit coin margin is large.
Considering these, even if bitcoin is supplied as a hill, the receiving side is difficult to calculate the tax, some taxpayers will increase and some people will lose it as a result.

However, in Japan, debate with a tax rate of 20% has begun, so it may change in a few years.