Company Grievance Squad is a Manga/Manhwa/Manhua in (English/Raw) language, Action 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

Ilgang Group, the number one business group that controls the Korean economy. However, the inside is steamed and stained with various kinds of corruption and corruption. The chairman, who needed a solution to save the decaying Ilgang group, makes a secret proposal by calling the youngest member of the Ilgang family, Lee Seon-ho, to Korea, who was living quietly in the United States… “Humans who treat their employees like dogs and pigs! Our ‘In-house grievance team’ will take care of your abuse!”