The casting couch. The holiday party. The black car. The setting for sexual harassment in the news and popular culture lately is Hollywood or Silicon Valley or Capitol Hill - but researchers say women who work in restaurants and clothing stores tend to encounter more predatory behavior than those in glitzier professions. "It's a story people haven't focused on enough," said Jocelyn Frye, who studies women's economic security at the Center for American Progress, a left-leaning think tank in Washington.