Becoming A Legendary Ace Employee is a Manga/Manhwa/Manhua in english language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Kim Tae-seok, a former construction worker, receives a notification that he has passed the document screening for a major corporation called El Sung. Soon after, a system message pops up before him. “You have gained access to the tutorial for ‘The Path of a Regular Employee’. Would you like to proceed with the tutorial?” Follow Kim Tae-seok’s struggles and adventures in his quest to become the legendary ace employee at the company!