To see whether good grammar is connected to career success, Grammarly reviewed one hundred LinkedIn profiles of native English speakers in the consumer packaged goods industry. Each professional had worked for no more than three employers over the first ten years of his or her career. Half had been promoted and half had not. Here is a breakdown of the results:
- Professionals with fewer grammatical errors in their LinkedIn profiles achieved higher positions. Those who failed to progress to a director-level position within the first ten years of their careers made 2.5 times as many grammatical mistakes as their director-level colleagues.
- Having fewer grammatical errors correlates with getting more promotions. Professionals with one to four promotions over their ten-year careers made 45 percent more grammatical errors than those with six to nine promotions in the same time frame.
- Having fewer grammatical errors correlates with frequent job changes. Those who remained at the same company for more than ten years made 20 percent more grammatical mistakes than those who held six jobs in the same period. This could be explained in a couple of ways. People with better grammar may be more ambitious in their search for promising career opportunities, or job-hoppers may simply recheck their résumés between jobs.