You can define it that way, but the problem is that the authors of the article didn’t give a definition. For example, I think they think the term means to do what’s in your job description and contract. And they think that workers should be going above and beyond that. But if they were forced to spell it out, then people would ask why companies don’t change the job description or contract, because obviously it’s ridiculous to ask people to do what you didn’t ask them to do.
You can define it that way, but the problem is that the authors of the article didn’t give a definition. For example, I think they think the term means to do what’s in your job description and contract. And they think that workers should be going above and beyond that. But if they were forced to spell it out, then people would ask why companies don’t change the job description or contract, because obviously it’s ridiculous to ask people to do what you didn’t ask them to do.