[Solved]-Highcharts stacked bar chart hide data labels not to overlap-Highcharts

you can iterate in each point in each serie, then check width of bar and destroy label if widht is smaller than ie.15px .

http://jsfiddle.net/ha5xe/1/

 $.each(chart.series,function(i,serie){
        $.each(serie.data,function(j,data){
            if(data.ybottom - data.ploty < 15)
                data.datalabel.destroy();
        });
    });