That may become the case in the US, but in places like Sweden you have to announce long before the actual layoffs to give the unions a chance to negotiate.
I went through a layoff where they announced they had to make major reductions in headcount (it ended up being about 30% but I'm not sure that number was announced). There was then several months of discussions with the unions before they announced who had to leave.
If you were not impacted they didn't tell you anything until the announcement. The people who were impacted had been briefed beforehand. As I was staying on I didn't know anything, which was stressful, but I guess that if I had known about the process it would have been less so.
That is the law in the US. In California specifically they needed 60 days public notice before a large layoff. That’s why employees have already sued Twitter.
The poster is talking about something more protective. in Spain before a massive layoff a company has to submit a plan to the government and get approval, as well as negotiating it with unions. Nothing like this can happen suddenly. That's on top of obligations to pay severance and give individual notice in some timeframe.
I went through a layoff where they announced they had to make major reductions in headcount (it ended up being about 30% but I'm not sure that number was announced). There was then several months of discussions with the unions before they announced who had to leave.
If you were not impacted they didn't tell you anything until the announcement. The people who were impacted had been briefed beforehand. As I was staying on I didn't know anything, which was stressful, but I guess that if I had known about the process it would have been less so.