Family and work.
I must first start off by saying that I have no siblings so I have no firsthand experience with what I am about to say but it has never stopped me before so fuck it.
Last night I was watching an episode of the deadliest catch. There was the younger brother (son of the late Capitan Phil) took off to get a key for a PO box and it took 2.5 hours. And when they returned claimed it was an hour at most. were they tweaking? Maybe but who knows. I know a couple of brothers that had a successful vegetable distribution business where it was the same story, one was always working the other always screwing off.
From my point of view when siblings work together it is always one that does not want to actually do the work. it does not matter if there are 2 siblings or 8 siblings. There is always one that does not do anything. This of course leads to a number of problems as the one that does not want to do any actual work will screw up the entire system. They will go around making trouble, telling people to do the wrong things, and maybe even start rumors for no other reason than they are bored. Now when I go into a company and see this behavior there is one of two responses. 1) oh well what can you do, they are here and we take care of our family, or 2) yeah you tell them they are fired. Ok let’s look first at option 2, ok I will, your fired and your office is already packed up on the way to your house the lock has been changed and here is your last check that is the easy option. Ok looking at option 1 is a little more difficult. This is where I have to evaluate how many problems they are causing and if it is economically stunting the company or not. If it is not hurting the company you can either challenge them and make them responsible for things that they are doing, or leave it alone. For the most part though if a sibling is causing a problem it will only get worse. Do not them ruin a company just because you ‘take care of your own’. It might be easier to just tell them to stay away and keep paying them.