when there is more than one shareholder, compensation needs to be discussed and agreed upon by all (in many cases, ideally at the START of the year).

Thank you. TGB.  

arbitrarily increasing wages of one shareholder is effectively stealing income from the others.

I realized this 1 week ago. I wanted for (Shareholder 3) an additional paycheck to cover withholding (pro-rate withholding so he would have an underpayment penalty) and the other two had already deposited their Q4 profit distribution, it was effectively too late.