Think of how relieved the hiring manager looking at your resume must be to have finally found a hard worker. After all, surely he/she has been combing through resumes from people who all listed themselves as “sort of hard working” or “kind of lazy.” But lo and behold, here you come touting yourself as a hard worker, and now we can let the hiring process begin. Right?
The vast majority of the other candidates also work hard, as this is a basic requirement and nothing that needs to be pointed out on a resume. If you’ve been a good worker in the past, the fact that you’re a hard worker will be evident upon reading the entirety of your resume.