The old blue collar working class has become almost invisible politically and much less visible socially. People still do appallingly crappy jobs, but after deindustrialisation in the UK they usually do them as temps. The localised and organised blue collar working class, who would live,  work and organise in the same neighbourhoods has been replaced by a white collar working class who do crappy menial office jobs - working in call centres, accounts, basic IT maintenance, salesandmarketing, training.

These are physically less demanding, but far more stressful intellectually and ethically, because many workplaces are set up to encourage competitive backstabbing, performance goals are carefully monitored and all-but impossible to achieve, and management has little interest in practical results and more interest in maintaining hierarchies and - in extreme cases - authoritarian bullying and abuse.

There's also a swarm of so-called freelancers and consultants who are upmarket temps employed on limited-term commissions and projects. This can be lucrative, but it's almost entirely dependent on outside factors.

It's much harder to organise in these fluid environments, so there's very little prospect of effective unionisation.

It's nice that people today have inside toilets and central heating, which they mostly didn't before WWII. But work environments have moved from one kind of abusive harshness to a different one, and I don't think anyone who works below the level of middle management is going to pretend that they're in a happy workers' paradise.