Engagement is a measure of how willing you are to donate your life to achieve your employer's shareholders gains in wealth. Please note, it has nothing to do with actually being paid more, being happier in your life and being able to spend more time doing what you desire rather than being able to pay your bills. Engagement is in the owner's interest, not yours:
Employee engagement describes the level of enthusiasm and dedication a worker feels toward their job.
Employee engagement can be critical to a company's success, given its links to job satisfaction and employee morale.
Engaged employees are more likely to be productive and higher performing.
Employers can foster employee engagement through effective communication, offering rewards, and discussing career advancement.
https://www.investopedia.com/terms/e/employee-engagement.asp
The happier you are at the grindstone, the more likely their profit increases.