Employees can indeed try to succeed at their challenging jobs through sheer willpower and perseverance. They can work and learn after hours and on weekends to try to become productive. But the fact remains is that it is ADP management's responsibility to create and maintain a superior workforce. Employees can be blamed that they don't know how to do their jobs but management is in control and should be held accountable for this sorry mess.
Either ADP is not able to select the proper job candidates for their positions or their training programs are ineffective. ADP is paying the cost of not having quality employees who can do their jobs in the form of lowered client satisfaction, more client complaints, and less revenue.
ADP should have done whatever is necessary to make sure that during and after their ongoing employee replacement scheme that they always had a strong workforce who could provide quality service to their clients and compete effectively against their competitors. They should have kept a strong core of experienced personnel and dumbed down the salaries and benefits at a slower rate, and thrown out their experienced workers only when enough new competent workers would have been available.
The fact that ADP now has a substandard workforce is their own management's fault and no one else's. They have failed. Failed. Failed.
Excellent point by @P7C0IcX-oaol, bumped to a thread.