Investopedia defines the law of diminishing returns as, “a theory in
economics that predicts after some optimal level of capacity is
reached, adding an additional factor of production will result in
smaller increases in output”. For example, a business can grow its
sales by adding employees to a certain point, at which time, hiring
additional employees does little (or nothing) to increase sales. This
week’s chart segments the Canadian economy into sectors, highlighting
‘Goods’ sectors in red, while ‘Services’ sectors are highlighted in
blue. The bars represent the change in productivity per employee from
the third quarter of 2022 to the first quarter of this year. Notice
all but two sectors (Transportation & Warehousing and Retail
Trade) have shown a negative change in production per employee over
that time frame. In other words, 15 of the 17 sectors of the Canadian
economy are exhibiting the law of diminishing returns as it pertains
to employees – additional employees are adding less to production /
sales. This isn’t good and typically occurs as an economy crests. As
the economy grows, businesses add more employees to help grow
production /sales. However, at some point, the business reaches an
optimal level of employees which means that for each additional
employee hired, the company’s sales will increase by a decreasing
amount (or not at all).
This employment statistic can be viewed as a leading indicator of
future job creation or losses. Logically, if production gains per
employee are positive as they are in the two sectors at the top of the
chart, businesses in those sectors (Transportation & Warehousing
and Retail Trade) have an incentive to hire more people. Conversely,
businesses in the other 15 sectors of the economy have less incentive
to hire because recent additions to their workforce haven’t
meaningfully increased sales. Furthermore, businesses which are
experiencing the law of diminishing returns for employees are likely
to be the first to reduce their workforce if they experience a decline
in sales (i.e. firing people may reduce costs more than it reduces sales).
What are your thoughts? I’d love to hear from local business owners
on this subject – are you experiencing diminishing returns in your
workforce, or do you see the potential to increase production per
employee? Does the chart which shows trends at a national level ‘ring
true’ to what you’re experiencing at a local level?
Eric Van Enk, Wealth Advisor & Associate Portfolio Manager
National Bank Financial – Wealth Management
Medicine Hat, AB