The premise of this essay is that workers should benefit from automation, not owners/stockholders. In your case, workers do benefit in some way, like less boredom, but do they work 15 hours a week instead of 50?
no. If they automated a part of their job, and yet is unable to contribute new value (in the form of other tasks completed), then they will either be made redundant or their pay is lowered correspondingly. Workers are unable to reap benefits from value derived through their automation if they don't own the equity of the business they are working in.
Unless they of course keep it to themselves. If employer hired you for data entry and nothing else. And there is no other work for that employer, is it fair that you automate the job and not get rewarded for it somehow? The only way to make things just might be keeping it from your employer. If the employer was intelligent they would have realized they could automate it in the first place and this type of employer likely will not reward the employee, but instead just get rid of him/her.