The news that Amazon is looking to hire 75,000 more workers in the US and Canada is eye-catching enough, even for a firm that employs 1.3 million around the globe, according to its website.

But it is the offer of an average $17 an hour starting salary, plus a potential signing-on bonus of $1,000, and benefits such as health and dental care, that really stands out.

While the average American worker now earns around $30 an hour, this proposed Amazon package easily exceeds the current US federal minimum wage of $7.25 and therefore potentially informs the case that wages are going up.

If so, investors need to consider three potential implications:

• Wage inflation may be upon us;

• That in could turn drive wider inflation and even force central banks to tighten monetary policy;

• Higher wages mean higher costs – and potentially lower profit and margins for companies.

Pressure on profit and margins, could come at an inconvenient time for the US stock market, where headline indices trade at or near to record highs and valuations are, on some metrics, potentially looking stretched.

HIGHER PAY GRADE

The US downturn of 2020 looks unusual in many respects, but one of them is how wages look relatively unaffected, despite a surge in unemployment.

Even now the jobless rate stands at 6.1% according to the headline U3 rate and 10.4% on the basis of the U6, which includes discouraged and part-time workers who would like full-time jobs, as well as those who are seeking a new post. Wage growth looks to be cooling but only after an unusual spike last year and pay is still marching higher.

This may be a legacy effect of the Trump administration’s desire to bring jobs back onshore in the US and reverse outsourcing and globalisation.

It could also be the result of welfare and labour support programmes, as well as stimulus cheques, during the pandemic. Despite the virus, the economic slump and an initial spike in the jobless rate, US personal income hardly missed a beat and has since shot higher.

It took two years for US personal income to recover after the 2007/8 financial crisis. This time it took eight months. Are companies therefore finding themselves having to offer better terms, with higher pay one key part of that, to tempt Americans back to work?

POWER SHIFT

If so, workers and their families may well be thinking ‘about time, too’. Since 1947, Americans’ pay has fallen by five percentage points as a portion of GDP. American corporate profits have increased by almost exactly the same amount.

Intriguingly pay bottomed at 42% of US GDP in late 2011, more than two years after the financial crisis had ostensibly come to an end. It has since slowly crept back to 44%, while corporate profits have slipped from 10.6% to 9.1%, on a pre-tax basis, according to Federal data.

Lower taxes and share buybacks, among other things, have continued to boost post-tax income and earnings per share, but the Biden administration is now pushing for higher taxes.

Any slowdown in profit growth, or even a drop in corporate earnings thanks to higher wages and higher taxes, could leave lofty US equity valuations looking exposed on the downside.

Professor Robert Shiller’s cyclically adjusted price to earnings CAPE ratio suggests that US stocks are trading on 37 times earnings, the second-highest multiple ever. Only during the final stages of the technology boom did US stocks trade on a higher valuation and investors may remember how that episode ended very badly.

Bulls will snort at the CAPE analysis and point out such arguments about the overvaluation of US equities go back for a good few years.

They would be right to say that CAPE is not a tool for timing the market. But an analysis of the compound annual growth rates in the S&P 500 index over the next decade from any point in time against the Shiller CAPE shows that anyone who has bought at multiples in excess of 25 times has nearly always locked in negative returns for the next 10 years.

The one exception is the past decade, with central bank intervention one possible explanation. But if inflation does move higher on a sustained basis, the monetary authorities’ scope for keeping interest rates low and doling out more quantitative easing could be limited, and this is why wage inflation could be so important going forward, for consumers and investors alike.  

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