Best man in my wedding went into their management trainee program in 2000. He worked his way up to being a store manager and has since left them of his own choosing.
The things I heard about how they treated their employees is reason enough for me to not shop there.
Circa late '90's my boss @ the time was on the local United Way board of directors. They approached Menards for a donation and were told nearly verbatim: "Our charitable donation is providing jobs and low prices."
I've self-boycotted Menards for over a decade as a result of the above.