Want to stop sexual abuse in the workplace? Unionize.

Since the Harvey Weinstein scandal broke last month, torrents of women have come forward with credible charges of sexual harassment, bringing down veteran journalists, big-name directors, and powerful politicians across the country. But this necessary reckoning has also relied on newsworthiness. The headlines blare, and the offending man is forced to retreat. That model can cut down a Weinstein, but is unlikely to work against, say, a restaurant supervisor who's guilty of the same...