Psychological well-being is built on three primary dimensions.  You can read as much about it as you wish, but for our purposes I will take a shallow approach, and assume the theory is sound.

Autonomy – ERP systems impose rigid workflow and processes, and system users may feel they were not properly consulted.

Competence – ERP systems turn the user world upside down.  People who were experts on the old system are novices on the new one.  Their skills are suddenly obsolete – they make lots of mistakes and are told they are ‘doing it wrong.’  All of their hard-earned skills on the old system are suddenly obsolete.

Relatedness –  Workers form social networks for support, and those networks can be powerful forces to reject a system.  If people feel exasperated from a loss of autonomy and competence, they will reach out to their

Compliance

Engagement

The “Why”

“I have to”

“I want to”

Motivation

External
(reward & punishment)

Internal
(pursues purpose)

Focus

Rules and policies

Goals and mission

Results

Meets standards

Exceeds standards

Behavior

Follows instructions

Take initiative & innovates

Outcome

Stability

Growth, innovation, higher productivity