With the economy in flux, people are training for jobs that provide stability and flexibility. "The pandemic has sent shock waves through the labour market, with millions of layoffs and, for those who remain employed, fears of future cuts. In the 2008 recession, long-term unemployment, lasting 26 weeks or more, remained high for years, scarring workers' psyches and household finances. New technology and evolving skill requirements made it hard for many people to rejoin the labour force even as the economy recovered." Lauren Weber explores for The Wall Street Journal.