Usually bonuses or ‘performance related pay’ is brought in to reduce the overall wage bill of an organisation, disrupt a previously well understood and cohesive wage structure and to introduce suspision and doubt into a workplace where these things didn’t previously exist.
Often brought in to stable working environments to foster an element of ‘divide and conquer’ and to obfusticate previously transparent wage negotiations.
Gives far more power to the management and can destabilise a previously happy team.
Takes power away from those who understand how a business actually operates and puts it into the hands of those who have been employed purely in pointlessly unnecessary administrative tasks.
It’s another example of the illusion of choice designed to screw the majority whilst telling them they should be grateful.
See also acadamy schools, internal NHS markets, impenetrable mobile phone contracts, pricing structure of train tickets etc etc….