Hello, Mr. Nemashikusa.
You were told, “Mr. ◯◯ has impermanent actions, isn't it?”
I don't know if that boss's Buddhist knowledge and beliefs, and the situations where those words were uttered, so I don't know if it's positive or negative.
I was made aware of the Buddha's laws and truths of the universe because “various acts are impermanent (the world is changing)” and “there are no laws (the world is related).” The foundation of Buddha's teachings is that living actively based on this law is the correct way to live. This is called an “impermanent view.”
However, in Japan, it is used as a phrase lamenting the sadness of change where happiness does not last, as the famous phrase “The Sound of the Bell at Gion Seisha” in the Taira Family Monogatari suggests. This is called a “sense of impermanence,” and it is the exact opposite view of “impermanent view.”
If your boss knows about that and sees your active way of life, he says, “You're like an impermanent person. It's probably the best compliment if you're praising “living by accepting the difficulties of various changes.” But usually, “He's a person whose actions seem impermanent. There may be many cases where they criticize “they are suffering from being swayed by various changes.”
If your way of life is positive, accept your boss's words as an “impermanent view,” and live your life happily. Gassho