Small businesses are using a classic benefit to stay competitive in attracting and keeping workers

A higher share of US job postings mentioned 401(k) plans than several years ago. Daisy-Daisy/Getty Images Small businesses can attract and retain staff with 401(k) plans. Business owners can offer it in lieu of more costly benefits that they can't yet afford. It can help reduce first-year quits, a Gusto analysis found. Sara Marye wanted to get more serious about the benefits she offered. Several months after promoting a part-time employee to full-time status at her school-curriculum small…