Economists Peter A. Petri and Michael G. Plummer challenge the view that TPP will primarily benefit the wealthy. Their analysis finds that "the gains from TPP appear to be fairly distributed—labour will gain relative to capital, and cost reductions will favour low-income households. Some workers will need to change jobs, but they constitute a small fraction of normal job churn in any given year, and the national benefits argue for generous compensation for their adjustment costs. The agreement will also benefit workers in TPP's poorest member countries." Research by Harvard economist Robert Z. Lawrence finds that the "percentage gains for labor income from the TPP will be slightly greater than the gains to capital income. Households in all quintiles will benefit by similar percentages, but once differences in spending shares are taken into account, the percentage gains to poor and middle-class households will be slightly larger than the gains to households at the top." An opinion piece by Ed Gerwin in "The Wall Street Journal" argues that the TPP agreement benefits small businesses in the US.