Critical response to "Work" was mixed upon release; critics praised its composition and Rihanna's decision to return to her earlier themes of dancehall music, while others were more skeptical of the song's potential as a comeback for the singer. Critical opinion improved over time; the song was included on several year-end lists and nominated for two awards at the 59th Grammy Awards: Record of the Year and &lt;a href="Grammy%20Award%20for%20Best%20Pop%20Duo/Group%20Performance"&gt;Best Pop Duo/Group Performance&lt;/a&gt;. The song reached number one on the United States' "Billboard" Hot 100 chart, becoming Rihanna's fourteenth number-one single and making her the act with the fourth-most number-one songs on the chart (after The Beatles, Mariah Carey and Elvis Presley). The song remained at the top for nine weeks. The song also peaked at number one in nine additional countries and is certified Platinum or higher in thirteen countries, including 8x Platinum in the US and Diamond in France. It has also since sold 32.5 million units worldwide, making it one of the best-selling digital singles of all-time.