Perhaps not directly physically harm. And certainly countless examples where a billionaires company raised the income of it's workers. An easy and well known example is the Walton's, the family of Walmart founder: Sam Walton. At a total wealth of at least 150 billion dollars. While inflation adjusted average wage of their employees has stayed the same, or gone down in the last 3 decades during the enormous rise of Walton's families wealth. A rise of over 60 billion dollars in just the last decade while much of the country went through a severe recession.

The richest family in the world, the Walton's, control their Walmart empire with an iron grip. They figured out long ago they can reap them selves yet more wealth and income if they make sure their stores do not unionize. A union can force Walmart to pay fair wages, provide benefits and treat their employees beyond simply: expendable.

Walmart company does two things when their is hints of unionizing, they send a special team of people to display a bunch of anti union propaganda to the store employees, they also identify and quickly eliminate the leaders of the unionizing organization. Typically finding an excuse to fire them through dense legalese from their large and experienced attorney team, there even is anti union promises you have to sign when you apply for a job at Walmart. They also take over most of the work if the newly formed union chooses to strike, and hire on temp workers from out of state. If the union manages to stay strong through a mostly ineffectual strike, and a union does, against all odds, of this highly trained experienced union busting group, manages to form, they simply shut down the store for a year or two. The union has no money, the employees typically do not have money saved to last a year or two, they lose. Walmart simply loses the profits of 1 store out of the thousands they own. All the employees lose their jobs, and in smaller towns, the town suddenly loses a huge source of tax dollar revenue that often times can number over 50% of the retail tax dollars a town receives. All the mom and pop stores are mostly long gone, and everyone that did shop at that WalMart is now forced to drive out of town to spend their retail dollars in a different town. With the huge loss in tax dollars, and sudden large upswing in the unemployed seeking assistance, a town can quickly run through emergency reserves of cash and be forced to shut down services like police and fire.

And of course, at this point everyone that takes time to research possibly striking in Walmart becomes aware of this tactic and realize is futile. It is far cheaper for Wal-Mart to close a few stores and prevent unionizing spreading across their stores, then it is to pay their employees a fair wage with good benefits.

If Wal-Mart had to pay unionized fair wages, with decent, livable, benefit packages, and actually give people full time jobs too the vast bulk of the millions of employees they have, you can bet the Walton family would not be raking in billions of dollars a year. Some other company that employed the same tactics would be paying their owners the billions instead. Walmart employees over 2 million employees. Giving all the employees a 1 dollar an hour wage increase would equal 4 billion dollars alone. (Walton family earned roughly 9 billion in 2013.) A simple 2 dollar an hour wage increase + some benefits, would wipe out the 9 billion that Walton family revived in 2013 no problem.

If the richest family in the world employs those tactics, exactly how much money do you think the Walton family would invest back into their employees if they get a sudden tax break windfall? They employ such brutal tactics like I outlined above, and now suddenly with billions of dollar windfall they going to go: "oh hey, we already made 9 billion last year, how about we just give our employees the additional 8 billion we just got in our tax windfall!" Especially when the Walton family and other extremely rich families/people spend millions a year pushing legislation to favor them.

Now not all billionaires are like the Walton's, The currently 2 richest people in the world, Bill Gates and Warren Buffet, talk a lot about income inequality, and they give billions away, and have pledged 99% of their fortunes to charity causes. Where they give to the real bottom end of extreme inequality, the poor in poor nations that do not even have social safety nets. I am not saying they are angels either, plenty can be written about how Bill Gates and Buffet caused a lot of damage as they amassed their fortunes.

My point is, any billionaire is an affront to hard working person that believes in fairness. There is nothing fair about a billionaire doing nothing for 1 hour, earning more then a life time of hard work from the vast majority of us. No one is worth in 1 hour of doing nothing, what your average hard worker earns in a life time of working hard. No one needs that kind of wealth either. No one needs 300 foot private yachts, no one needs private jets. First class on a commercial jet is more then plenty for those that work hard and want some comfort when they travel.