So, you've been working on your job for quite some time now and have always gotten along with the boss, when suddenly he either quits, is fired or retires and a new boss has come in to take his place. This can really put a lot of stress on you as an employee and you need to know how to adjust to this and how to get along with the new boss so you don't end up standing in the unemployment line with all the other job seekers out there.
You will need to understand that there are just some personalities that are going to clash. So it is important to remember that you don't have to like the new boss as a person and quite frankly he doesn't have to like you either, but you do need to show the new boss respect and be open and willing to adjust to his policies and how he runs things. It's a good idea to sit down with the new boss and get to know what his expectations are for not only you but for the entire company.
If after a while it looks as if the same work you have always been doing and was fine before is suddenly not good enough for the new boss it's your right to find the reason why it's not. You should be polite and ask them what it is that you can do that will help make your work better in their eyes. Also, make sure that you ask for the positive as well, see what it is that you do that he does like.
You will need to be professional at all times. Remember, that it's not just an adjustment for you but this is something entirely new for your new boss as well. Try and offer help wherever you can to make their acclimation to the new environment a lot easier. Take some time out to explain to the new boss what your job is and how you help the company and even discuss any new responsibilities that you might be willing to add to your work load. This will help you gain respect from the new boss.
Always do your best to stay as positive as you can at all time. The last thing you want to start doing is bad mouth the new boss, especially with your fellow employees. If the changes he's making aren't huge but are petty ones that just rub you the wrong way, take it and take it with a smile on your face. However; if you feel that some of the things the new boss is doing is actually inhibiting you from doing your job well you should then go over his head to his boss and let them know about the situation.
It's important to have patience and remember that no matter who we are, we are all human, none of us are perfect and we all as people make mistakes and your new boss is no exception to that. You can actually become an ally to your new boss if you allow them to get adjusted and you give them the chance to do so. You may even discover that on a personal level they're not so bad after all.