Thanks David, i understand you point but i'm still can't access to any Employee attribute, this is what i see using getArgumentArray(): sbuf.append(event.getArgumentArray()[0]); Console:INFO [main] Fred ............... com.render.domain.Employee@39f58a0e and traying to get some attributes to this object I only can access to getClass(), there is no getId(), getSalary() or getCompany(). event.getArgumentArray()[0].getClass() Any idea? Thanks Best regards. From: nabble@diroussel.xsmail.com Date: Thu, 25 Jul 2013 21:39:56 +0100 To: logback-user@qos.ch Subject: Re: [logback-user] Object domain from layouts In your app code call the logger like this: log.info("Employee: {}", myEmployee); Then in the formatter, call event.getArgumentArray() - http://logback.qos.ch/xref/ch/qos/logback/classic/spi/LoggingEvent.html#143 Then look at each arg and check if it is an Employee. David _______________________________________________ Logback-user mailing list Logback-user@qos.ch http://mailman.qos.ch/mailman/listinfo/logback-user