You say that as if your boss can't wake up one morning and fire you because they don't like the way you pour your coffee. The only thing that changes is how much paperwork they have to do to make it happen.
This in no way jibes with my experience as an employee. I know the value I provide, how long it would take to replace me and how much the company has invested in me and there is zero chance that I get fired tomorrow. Theoretically my boss could wake up and fire me, but practically there are many reasons whey they "can't". Similarly, it is very rare to see someone get fired in the first 3-6 months on the job unless they are ridiculously unprofessional or unqualified. There are high-profile companies where it could happen, but they are noteworthy because it is so out-of-the-ordinary.
