Labor costs approach 60% to 70% of most masonry projects. To control these costs, every week masonry contractors should review and compare labor costs for each project with their original estimates. Many masonry contractors spend 8 to 12 hours a week compiling labor production statistics for this purpose. The many hand calculations are tedious and prone to errors and revisions are difficult to make. Spreadsheet software can eliminate these problems. Programmed by the contractor to fit his own needs, it can calculate weekly labor production and costs more quickly and more accurately. Using the computerized spreadsheet described in this article, a masonry contractor can make and review labor reports within 2 hours.