Is this collusion?

I am the boss (not from this example) and host many home games where some of my subordinates come and play. (I am not often the biggest winner of the night) Granted, we all know poker fairly well. In my job integrity is also #1 priority. However, if I ever thought for a second that one of my employees was cheating, I would just ask them. I know most of them well enough that if they said no; it would be the truth, they would come clean, or I would be able to tell if they were lying. If they admitted cheating in any way or lied about it, they would not EVER be welcome back, and they would have to live with the un-spoken of shame every day at work. I would not let that incident affect their employment as they are all very good at what they do. In the case of someone I suspected as being a liar, I would watch them at work to be sure their lack of integrity issues remained outside the workplace and they would absolutely be aware that I was watching.

[MrBrightside]

I don't know how to say this without offending, so I'll just say it. I think your statement that could absolutely tell when your subordinates were lying to you is typical of many managers' arrogance. I have seen good managers and bad, but I've seen every one of them (and include myself in this, I did it for a while-- not anymore) completely duped by unscrupulous underlings.

First of all - no offense taken. But you should go back and re-read my post. I said I know most of my employees well enough that I would be able to tell if they were lying. And I have no doubts that the reverse is true as well. Obviously this is not absolute. On top of that, in our business, integrity is such a high priority that a breach of trust on any level would have the capability to have a very significant impact on the business. My point was that in our situation, if one of us thought another was cheating (very very unlikely), any of us would have no problem just coming out and confronting it. And I am confident that the truth would be told. It is a shame that OP's business environment is different in this area.

[Lottery Larry]

What type of business is this?

One that requires a serious background investigation before consideration.