Are white collar workers the blue collar workers of the future?
the long-awaited, long-delayed increase in the efficiency of
  office-work has finally arrived


Actually, so far opposite has turn out to be true. The article was written in nineties, in time of boom of productivity. Contrary to expectations, technological advances did not bring higher efficiency of work. As a matter of fact, the productivity has stagnated, as shown in the data below (note that the chart presents all nonfarm labour, including services, office support, admin., etc.).


Source: U.S. Bureau of Labor Statistics, United States Nonfarm Labour Productivity, 1988-2018

Not only software did not boost the office productivity, it is also one of the major factors of the stagnation - after all there are more distractions than ever in today’s workplace (social media, online games, etc.).

It seems that software designed to monitor employee productivity is not widely used. There are lots of time management apps (like TimeDoctor or WorkIQ, to name the few), budgeting apps, workflow apps, but it cannot be said that they expose 
'white-collar workers to the work-place dislocations, mass firings or at least diminishing employment prospects'.

With that being said, there are plenty of white-collar occupations that can be completely automated (for example bank tellers, bookkeepers, basically all the white collar jobs that include collecting and processing data), but that’s another issue. This is one of the main factors why employment in services in US, understood as % of total employment, never went back to the levels prior to the crisis of 2008.


Source: World Bank, Employment in services (% of total employment) in US, 1991-2017

Precariat is something different, but related to the loss of job and overall lack of security in life. It was highly used in public debate amids of the crisis in eurozone (you can read one viewpoint from Guy Standing, who popularized the term).



** As a side note, I used U.S. data, since USA is deemed to be pioneer in technological advances in services, but Japan would be another interesting example.