First you need to have data at the job level to be able to break up the employees time. Luke 4 jobs 10 hours does not provide enough information to know how to break the 10 hours into 4 pieces. In the attached workbook I have created the view you are looking for by first setting up the data. For the chart employee to rows, hours to columns, job id to detail (this creates the separate boxes), hours to color to shade the boxes, and then I added a reference line set to show just the value to provide employee totals.
Yada Chart.twbx 13.4 KB