>Is it possible to programmatically access a label object in a report?

No, because there're no label or field objects on reports. IOW, VFP reports are not OOP.
See Cathy Pountney's articles http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfoxgen9/html/vfp9reports2.asp and http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfoxgen9/html/vfp9reports1.asp on how you can manipulate report elements using ReportListener.