According to Dispatch, Lee Seung Gi reportedly has not been paid for his music since his debut 18 years ago. The company allegedly earned 9.6 billion won from Lee Seung Gi’s music, but the singer-actor was said to have received 0 won.

As of writing, there’s still no official statement from Hook Entertainment regarding the newly released report.
Source and full story via Naver: (1)
UPDATE:
“Hook Entertainment’s CEO Kwon Jin Young responded:
Hello. This is Hook Entertainment’s CEO Kwon Jin Young. As bad stories have been coming out about me and our agency from news outlets recently, regardless of whether they are true, I am so ashamed.
Everything is due to my negligence and lack of discretion, so I feel ashamed and apologetic.
It is reasonable to specifically confirm the truth regarding the stories currently floating around and being reported by press, but as mentioned in our previous press release, we ask for your understanding that we are currently in the organization stage to fact-check, and that we are refraining from releasing a statement of our position because this could be dealt with legally.
In the future, once the aspects that either Hook Entertainment or I have to deal with legally are clearly confirmed, we will not step back or avoid anything and take all responsibility.
Hook Entertainment and I will do our best to make sure that this will not interfere with the entertainment promotions of our agency stars and be even more careful so there are no further incidents that cause concern to everyone. Thank you,” as translated by Korean entertainment outlet Soompi.
Source: (1)