Maybe you should first ask yourself whether you want to be loading up on the stock of the company where you work...
I agree.
Why would you want to take on "double risk", that is loss of your job (employment risk) and reduction in value of your company's stock (investment risk)?
I understand that you may be a supporter of your company, but you also have to protect yourself from possible impact from these two risks.
While receiving company stock (via profit sharing) during my employment years, I would wait the required holding period and then sell the shares and invest the proceeds in other holdings.
My BIL worked for a major (at the time) communications firm and retained his stock distribution, along with additional purchase of shares over many years. His intent was to use the proceeds to build a new home and to provide income for his retirement years. I'll let you figure out what happened to the company
... BTW, he also lost a good deal of his expected pension, since the check from the PBGC is much less than he was counting on.
Today, in his late 60's, he still needs to work (part time) to meet his basic needs, rather than be retired. The old saying about "putting all your eggs in one basket" certainly applies to in this case.