A disproportionate number of "bosses from hell" are female.
I've had a total of ten bosses in 36 years of employment, half male, half female. Of the five males, two were good, three bad. Of the females, three good, two bad. Two of the bad male bosses failed in maintaining personal moral standards for his profession. It should be noted that both were fired when sɛҳuąƖ sin with an outside consenting adult became publicly known. One failed for lack of professional competence. Of the two bad female bosses, both were "bosses from hell" as well as incompetent! One spread vicious gossip about employees she didn't like and either got them fired or caused them to quit. The other not only mistreated her inferiors by means of an evil tongue, but also stole large sums of money and engaged in forgery.
Women are naturally more pious and virtuous than men, so it makes sense that when women turn to evil, they become worse than men.