The phrase "works hard" is often used to describe someone who is dedicated and committed to their job or task. However, there are many other words and phrases that can be used to convey similar meanings. Some alternatives include "puts in long hours," "exerts effort," "grinds away," "perseveres tirelessly," "labors diligently," "shows persistence," and "strives earnestly." Each of these phrases highlights the individual's determination and work ethic, emphasizing their ability to get the job done no matter what. Using a variety of synonyms for "works hard" can add depth and nuance to your writing, making your descriptions more vivid and engaging.