Management often contracts out food service, security, and janitorial work. This means they do not qualify for perks that are described in the article. It also

Management often contracts out food service, security, and janitorial work. This means they do not qualify for perks that are described in the article. It also means they don't qualify for company picnics, etc. Good managers will often do retreats, mixers, happy hours, etc. to encourage sales and accounts staff to mix with the engineers. I've never seen the same concern about how white collar workers get along with blue collar ones. I understand all the above reasoning. I'm just saying it's not just a problem in personal interactions.