My boss started a company about a year ago, and man he treats me really well including pay.

But the office guy has his side business in the same trade. He has been slowly taking our biggest contracts to build his company. (Entire apartment contracts and so on)

While I like the dude, he’s pooping on the boss and the company which treats all of us extremely well including him. It’s only 3 workers then the owner/boss.

I’m afraid if I don’t tell the boss, I won’t have a company to work at in a year.

But the boss loves the dude and listens to him more than anyone.

Do I tell the owner/boss what’s going on? (I also have crazy proof)

Or do I just enjoy what I have while I have it and keep my mouth closed?

My boss is losing out on over 10-20k monthly due to him which is a lot for a small company. I’m not sure what to do. But in my heart I know what’s right. Any advice is appreciated.