Giving people raises. I worked as a restaurant manager for a very popular bakery-cafe in the U.S. for 11+ years. It was full of the most hard-working, intelligent, underpaid people.
I worked with a young woman who had been a supervisor for 8ish years and had stepped down under the previous (less than great) GM. When I took over, she wanted to step back up. Her pay had been $13/hr. I asked my boss if I could bump it. Nope. When I submitted her pay, I entered the raise anyway. Approved. He didn't even check. He just assumed I would comply.
College kids always got passed over for raises when on leave. I started terminating them instead of placing them on LOA so I could hire them back with better wages.
If you are a restaurant manager, DO THIS SH*T FOR YOUR PEOPLE. They work hard. You cannot do your job without them.