Labour Costs in Phoenix

In a couple of weeks I am going to Phoenix for a meeting of one of the companies that I am involved with. The company is based in the SF Bay Area, but most of its employees are now in Phoenix. I asked the kids if they could guess why... A said maybe we needed people who spoke with a "Phoenix accent". I explained that the cost of leaving there is significantly lower than in the Bay Area and that we can hire better people at a lower cost there than here...