The dollar weakens against major currencies, including 1% versus the yen, following dismal U.S. payrolls data. The decline may ease the prospect of imminent intervention to prop up the Japanese currency, but at 161 per dollar, the yen remains a point of concern. An intervention would entail sales of dollars and other FX reserves by Japanese authorities, Capital.com's Daniela Hathorn says. Treasurys could get in the mix, but not enough to push yields much higher. "The bigger question is will intervention even work," she says. Hathorn adds that past actions didn't have a lasting impact because "fundamentals hadn't changed as exchange rates ultimately follow interest-rate differentials and capital flows." (paulo.trevisani@wsj.com; @ptrevisani)