Disobedience in the face of a direct order is insubordination, and grounds for summary dismissal (IANAL).
As GP says, some bosses avoid direct orders; Robert E. Lee was famous for vague orders with lots of room for "discretion".
Unless you are a junior, then any decent boss will expect you to give him advice - maybe strongly-phrased. If the decision is delegated, you don't have to discuss it with the boss anyway. But if you do discuss it with the boss, and his reply is "Do as I say", and you don't comply, then for sure you are "hard to work with", and also insubordinate. Time to polish your resume.
As GP says, some bosses avoid direct orders; Robert E. Lee was famous for vague orders with lots of room for "discretion".
Unless you are a junior, then any decent boss will expect you to give him advice - maybe strongly-phrased. If the decision is delegated, you don't have to discuss it with the boss anyway. But if you do discuss it with the boss, and his reply is "Do as I say", and you don't comply, then for sure you are "hard to work with", and also insubordinate. Time to polish your resume.