Many employers treat their employees fairly.
Conclusion (thus)
Using others as a means to one's own ends is not always morally reprehensible or harmful to others.
Evidence
Many employers treat their employees fairly.
Evaluate
What a weird, sparse argument. First, let's focus on our burden of proof if we're trying to prove a claim that Doing X is not always Y or Z
To prove this claim, we just need at least one example in which X is done, but neither Y nor Z happen.
So this author has to establish - Person A used Person B as a means to A's ends - B was not harmed - this was not morally reprehensible
In the author's example of employers treating employees fairly, has she established any of these things? No.
Goal
Look for an answer saying, in these cases of employers treating employees fairly, - the employer was using the employee as a means to their ends - the employee was not harmed - this arrangement was not morally reprehensible