^This^. The bottom 10% of any workforce, is generally -20% of overall productivity and contribution. In other words..they are a drain on productive and contributing workers. Too many companies take the “warm body” approach to employment.
Shooting some hostages on a regular basis is healthy for an organization. It also reminds the remaining employees who has the gun.....
That's rather old school thinking and generally doesn't work well in the long run. There are some employees who are low performers because they are lazy or incompetent. Getting rid of those people usually improves morale because their coworkers probably saw it long before management did.
But some people are low performers because they have a turkey of a project, don't have the right resources, or are lacking some key piece of knowledge to get the job done. Firing those people tends to destroy morale and turn the workforce against management. Their coworkers knew why they were struggling and usually feel management is being vindictive.
I've seen both scenarios play out. I once contracted at a company that was hyperactive about firing people. Morale there was awful and the company ended up folding.
Another company was led by a literal fascist. He had been born in Argentina in the late 1940s to parents to left Italy in 1945. The place was run much like Mussolini would do. That was probably the most chaotic place I've ever worked. People were downright paranoid and were scared to share even the tiniest scraps of information. My team needed some key information from another group and I could only get the information by befriending someone from that group and basically becoming her Psychological therapist for a few days. They are also out of business (I think their assets were bought by some larger company) and there was a website up for a while for survivors of that place.
I've also seen some people under-perform because they were incompetent. I was on a team of three with one of these people once. I was the programmer and the other two were the hardware people. She screwed things up so badly I had to step in and save the hardware side. When the other hardware person got a bad performance review, I went to my manager and told him why things got screwed up. He was unaware the two of us were carrying the third. She got transferred to a less demanding project.
This woman graduated with her sister at the same time and both came to work for my company in the same group (different departments). I worked with both of them. One knew her stuff and had the makings of a top notch engineer, but I think the other sister had skated through school cheating off her sister. She didn't know the basics and it showed when she actually had to do some real work. I wish they had transferred the competent sister to my group. She would have been a big asset, but we ended up having to limp along short and engineer until I left.
Paul O'Neil who was George W Bush's first Treasury Secretary had worked in and out of government and in the private sector. In the private sector he was known as kind of a marvel at turning around companies in trouble. His biggest achievement was turning around Alcoa who had terrible worker relations. He realized that was one of the biggest problems the company had and the company became very successful during his tenure as CEO.
Ron Suskind wrote his biography after he left office as Treasury Secretary. It's called the Price of Loyalty and it goes into O'Neil's thoughts on management. When he was in business and had to deal with other companies, he always watched how a manager treated their immediate staff. If they were courteous and decent, he usually found the company well run. If they treated their staff like slaves, the company was usually a mess with poor morale throughout.
These stories about Tesla do concern me. Most companies, especially young companies, are extensions of the ego of the CEO. And Tesla is that way. I don't think Elon thinks himself inherently superior to others based on his position, wealth, or whatnot. He hated Apartheid and still has a difficult relationship with his father due to his father's racist views.
But Elon does have a superior intellect to just about everyone he knows and I think that makes him very impatient. He sees everything very deeply and broadly at the same time. I suspect he carries around some pretty detailed maps of where Tesla and SpaceX are headed and all the steps necessary to get there from here. The problem is other people just can't hold that much information in their heads at the same time, and even if they could, they don't know everything Elon knows.
He gets impatient because he sees so much those around him miss. It probably makes him terse and angry sometimes. He's not exactly a people person to begin with and his management has always been a weakness in all his companies. He projects this down from the top and as they say the stuff flows downhill. Management tends to channel Elon (probably without fully understanding why) and it makes for a rough work environment.
I've worked for a fair share of companies that don't respect their employees in one way or another and right now I'm working for a very well run company. I'm currently 7 years in on a 6 month contract. They keep paying me and seem to be happy with my work, so I keep chugging along. They get good work out of people because everyone is respected. Another person on my project has been underperforming lately and the first question from my manager has been "what's going on?" rather than attacking.
Sometimes underperforming people do need to go, but it's in everyone's best interest to save those who are drowning for reasons beyond their control. Getting rid of the latter without figuring out what's wrong just shows everyone that management is clueless to the real problems and makes everyone twitchy and scared.