Employees should have the same access to liquidity that founders get, but that's orthogonal to the 409A. The reason we want to keep the 409A low is so that when the company is valued at, say $100m, the common shares are much lower, say, $20m (even though they make up a majority of the company's shares!). Now when we hire that amazing person and offer them 1% of the company, their options have a strike price of $200k but already an expected value of $1m+.
Really the games we play with 409A valuations are a reason for founders to limit their own liquidity, too. Outside of a few famous examples like Google and Facebook, founders and employees have the same common shares, and it's in both their interests to keep the common share price low while building the company. If founders are selling shares and not inviting employees to participate, it isn't because of the 409A. Those founders are just assholes.
Really the games we play with 409A valuations are a reason for founders to limit their own liquidity, too. Outside of a few famous examples like Google and Facebook, founders and employees have the same common shares, and it's in both their interests to keep the common share price low while building the company. If founders are selling shares and not inviting employees to participate, it isn't because of the 409A. Those founders are just assholes.