and the main reason is volatility and all people do know about such thing.Its possible for it to be adopted but not on to that extent on where they would be the
main when it comes to salary system.It wont really work.
on company side they still paying workers' salary in fiat money but directed to workers' account on bitwage
and for workers they will receive payment in cryptocurrency with no hassle (but watchout for the service fee)
Anyhow, this feature should be not mandatory by the company and only limited to employees who preferred to be paid in BTC.
based on what I read, the service can facilitate workers even without the employer involvement
the workers can just ask the employer to pay his fiat salary to his bitwage account
getting payment from overseas company needs to wait for international money transfer and fund clearing in the bank
so this will be a good option for cross-country workers that want to expedite payment of their salaries