a) Worst HR practices
b) Some HR managers are recruiting people through corruption as they route their known/interested candidates through consultants and even after negative comments from us, they hire the people of their choice. It has happened with me personally when i choose a candidate and HR selected one and later i found out that she was relative of HR's wife
c) Worst politics as some people just rest and take salary home while others have to make up for them also and while increments all are same
d) They hire like fools and create illogical burden and try to adjust them anywhere even not a right fit