The short answer is yes. It depends on what format you want, the format of the source document (i.e., pages vs eDoc), and whether or not the Workflow service account has access to the destination folder, but it is possible and I do exactly that for testing quite often.

As an example, the following code takes a LF document and exports it to a network folder as a PDF.

namespace WorkflowActivity.Scripting.PDFExport
{
    using System;
    using Laserfiche.RepositoryAccess;
    using Laserfiche.DocumentServices;

    public class Script1 : RAScriptClass102
    {
        protected override void Execute()
        {
            // Get and lock source document
            DocumentInfo sDoc = (DocumentInfo)this.BoundEntryInfo;
            sDoc.Lock(LockType.Exclusive);

            DocumentExporter dExp = new DocumentExporter();
            dExp.CompressionQuality = 50;
            dExp.IncludeAnnotations = true;
            dExp.BlackoutRedactions = true;
            dExp.PageFormat = DocumentPageFormat.Jpeg;

            var ExportOptions = PdfExportOptions.RenderAnnotationsAsImage | PdfExportOptions.IncludeText;

            string path = @"\\servername\C$\folder\"; //UNC Path
            string filename = "filename.pdf"; //File name with extension
            
            dExp.ExportPdf(sDoc, sDoc.AllPages, ExportOptions, path + filename);

            // Release source document
            sDoc.Unlock();
            sDoc.Dispose();
        }
    }
}