While I do agree for other reasons, the problem you state can be solved by being paid with bitcoin. Some employers (notably, police) do have the option to pay wages in bitcoin. Though these are very few they are still there.
Not necessarily that all employees will adopt with bitcoin that is not relevant if they are not interested on bitcoin. Most just like to directly receive their paycheck and spend right away, bitcoin will not give them convenience because they are not into it unlike us who considers bitcoin already as part of our life. In the future when bitcoin will be majorly adopted, investors, traders, gamblers, and shoppers online will most likely be benefited.
Just imagine as an employee waiting for your salary to be confirmed for several days lol. I would rather have my salary in fiat currency than going with the trend but being stressed due to the scalability issue. Waiting for our family's bread and butter to be confirmed for several days is quite annoying. And bitcoin will never replace the function of fiat currency smoothly. It can be perfect as an alternative but never a primary currency.