Cash yield accounts can earn 7.6% and up and are liquid in 5 days with no term. Compounding daily and paying out monthly. These programs are well collateralized and secure.
For 401k's with Bitcoin in them there is a drastic improvement to the plans Sharpe Ratio. Another advantage is getting away from average returning mutual funds and into a more diversified portfolio. A win across the board and something new to bring to employees.