Why he should believe me?
Because you documented the idea and either copied the manager on the initial proposal to your lead, or you mailed it to yourself so that you could pull up the email and show it to him in a situation like this.
Because you documented the idea and either copied the manager on the initial proposal to your lead, or you mailed it to yourself so that you could pull up the email and show it to him in a situation like this.
That was going to be my original suggestion as well, and I think it might work (for some value of "work"). But honestly, if you're working with somebody / in a situation where you have to resort to this kind of stuff, it's probably better to just go work somewhere else.
As the saying goes, you can change your organization or you can change your organization.
My other suggestion is keep things close to your vest. If you have the power to implement changes just start doing it. If you don’t, start making branches and developing proof of concepts. Start showing your manager before including the a-hole in the ideas. So that if he try’s to steal it, then your manager has already seen it from you.
Also if he’s doing it to you, your not alone he’s doing it to others too.
Whatever you decide to do, if you can get a trusted coworker to also do it. Then there is a pattern of behavior that can’t be ignored.
My other suggestion is, get your resume in order, start interviewing. Forget the a-holes name the instance you walk out the door.
Also, it doesn't seem right that I cannot freely discuss ideas with him and I must document them first.