Unemployed find old jobs now require more skills:

The jobs crisis has brought an unwelcome discovery for many unemployed Americans: Job openings in their old fields exist. Yet they no longer qualify for them. They’re running into a trend that took root during the recession. Companies became more productive by doing more with fewer workers. Some asked staffers to take on a broader array of duties — duties that used to be spread among multiple jobs. Now, someone who hopes to get those jobs must meet the new requirements. As a result, some database administrators now have to manage network security. Accountants must do financial analysis to find ways to cut costs. Factory assembly workers need to program computers to run machinery.

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