How do I deal with my assistant manager constantly complaining about the general and district managers?

My assistant manager he was the Deli manager for years which is where I started before transitioning to grocery and now I’m in the meat department.

Nonstop he's all mad and upset because he feels like the general manager is giving his responsibilities to him and how he shouldn’t be having to do X, Y, and Z. Stuff dealing with ordering, store finances, and personal issues as well as scheduling.

I am so sick and tired of hearing about it it’s not even funny. He also thinks that the district manager is nit picking everything. I know the DM and he’s not a bad guy…. He just wants results and my store is underperforming compared to some of the other locations.

Not that they are perfect managers but I’m so sick of the AM constantly complaining. I don’t want to hear about it all I want to do is…. Get my job done and go home.

How do I deal with my assistant manager constantly complaining about the general and district managers?
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