The pandemic forced millions of people, who previously carried out most or all of their work in the office, to do it at home instead.
Bosses can take screenshots of desktops to check staff are working rather than browsing the internet or watching videos. The union, which is launching a new sector to recruit tech workers, also says the proportion of people being monitored at home by camera has more than doubled - from 5% to 13% - since April.
The Information Commissioner's Office advises that employers should ensure staff are aware of monitoring at work - whether at home or in the office - before it starts. They should also explicitly be informed of the reasons for this happening. "A lot of the time in my job is spent designing things on paper, away from the screen, so that doesn't register if someone is simply looking at what's going on on my desktop.
But firms using the technology argue that they are acting reasonably, with so many employees now out of sight of managers and otherwise difficult to oversee.or under hybrid arrangements - a mixture of home and office - than at the height of the pandemic. But many still are.as soon as they start a new job. Its consultation, which includes looking at home working, closes on 1 December.