I was reading an article, but I had a little problem understanding the meaning of "to sack" in this context.
"Companies are being forced to restructure in order to survive, and this means they have to sack or lay off many employees."
When I looked for the meaning of to sack, it gave me: to remove someone from a job, usually because they have done something wrong or badly, or sometimes as a way of saving the cost of employing them.
But to lay off means the same thing, doesn't it?? To sack in this context would have the meaning of to save up?