At my current employer, nepotism reigns. Relatives get all the plum assignments and job security. It's a privately owned company, so they can do whatever they want.
We haven't mentioned age discrimination. I was at a job site today, and started to create a profile. They had a drop-down menu to select the year you graduated high school (I don't think they can ask that, but bear with me). The menu ended before my year. Clearly, a subtle way to screen out the older workers. And, I am assuredly not a senior citizen.