Using Taiwanese stock data. this paper shows that the explanatory. power of static CAPM for cross-sectional stock portfolio return is enhanced when return on human capital is considered in measuring aggregate wealth. Unlike the evidence from the U.S. market that the performance of conditional CAPM is considerably better than static CAPM. the evidence from Taiwan stock market indicates that the conditional CAPM performs slightly better than the statistic CAPM and the static CAPM with the consideration of labor income risk. The result can be explained by the fact that the small-growth firms and the big-value firms have significantly positive pricing errors and negative pricing errors respectively. The result does not change substantially after taking various important factor sensitivities and portfolio characteristics into account