Sociologist: Suggestions for improved efficiency that derive from employers are unlikely to elicit positive responses from employees, who tend to resent suggestions they did not generate.
Conclusion (therefore)
Employers should engage employees in nonthreatening dialogues that emphasize the positive contributions of the employee to the development of ideas that improve efficiency.
Intermediate Conclusion
This more employee-centered approach will help the employers implement their ideas more quickly and effectively.
Evidence
Top-down suggestions (from employer to employee) for improved efficiency are unlikely to elicit positive responses.
Evaluate
This argument is a little hard to organize. We don't necessarily have to call that last idea an Intermediate Conclusion, but it seems like an opinion we could potentially object to or ask about.
In terms of how the plan is supposed to work, the author assumes that whereas .
But in terms of getting from the last sentence to the Main Conclusion, the author assumes that
Goal
We either want to be more convinced that the plan will achieve the goal, or we want to connect the positive idea of "implemented more quickly and effectively" to the conclusion language of "should do it".