When the total employment can't continue to grow, the reallocation of employment among industries will become an important driver of economic growth. In China, any single non-specialized employment statistic can only satisfy two of the three key characteristics—industry segmentation, period continuity and scientific method—resulting in an imperfect data foundation for studying employment allocation. Consequently, scholars have devised compromise methods that cross-complements data from multiple employment statistics to construct subdivided industries employment data fulfilling all three characteristics. Through an analysis of employment statistics, this paper reveals significant discrepancies in survey designs and inconsistent statistical outcomes across employment statistics, and forced cross-complementary can lead to serious accounting biases. Although the employment data of the demographic survey has the disadvantage of being collected every five years, its industry classification is more detailed and the data are more accurate. We integrate the demographic survey data with the input-output tables to reconstruct the employment and economic growth database of 69 subdivided industries in China from 2000 to 2020. Then, using the criterion of whether employment allocation across subdivided industries promotes total factor productivity growth, this paper evaluates the appropriateness of employment allocation. The analysis demonstrates that employment allocation across subdivided industries is generally appropriate in China. The reallocation of labor from agriculture to non-agricultural industries contributes most significantly to enhancing allocation appropriateness, and its contribution is still rising. Recently, the reverse allocation of employment in some non-agricultural industries—where employment "increases when it should decrease" and "decreases when it should increase"—has intensified. Skills mismatch and disparities in different industries' labor income shares are identified as key barriers to improving the appropriateness of employment allocation.