The dictionary definition of insubordination is “defiance of authority; refusal to obey orders.”
I’ve always believed that this term is not applicable in ordinary, civilian employment settings. Even though the definition says “defiance,” IMHO the two terms (defiance and insubordination) aren’t equivalent or interchangeable. Insubordination is appropriate in settings where there is a strong authoritarian hierarchy and chain of command, particularly the military, but also military-type settings like a police department or possibly a religious order. IOW organizations where the members have knowingly taken their place in a subordinate position (hence the term) to an acknowledged strong authority that has the power to give orders. A loyalty oath of some kind is a condition of membership and members expect enforcement of orders and punishment for disobedience.
In ordinary offices, schools, retail establishments, nonprofits, etc., bosses are supervisors, colleagues, even owners, but they don’t have this kind of authority, though some petty Napoleons think they do. I’ve worked in places where the “boss” (at whatever level) accused people of insubordination-- and I thought then and still think it is bullshit. I mean, a soldier can defy an order, be court-martialed, and possibly shot. A defiant priest can be excommunicated (but he is still “a priest forever according to the order of Melchizedek”). Their superior officers have the right to issue orders, and both sides know it. But a civilian boss who says, “That’s an order,” is out of line.
To me, supervisors can make requests, issue directives, set policy and those things can be enforced ultimately by firing, after the proper procedures have been followed. But to go back to the definition I started with, dismissal simply for “defiance of authority; refusal to obey orders” is not legitimate, because the civilian boss doesn’t have the authority to issue “orders” in the first place.
Question triggered by plight of a friend who has taught in a private high school for over 40 years. He has clashed with a new CEO (not the principal, but the principal’s boss) for the past four years and got a letter threatening him with firing for “insubordination.” Not looking for advice on what he should do, as I don’t have all the details, just opinions on the appropriateness of that term in this situation.