Many, but definitely not all. And Google and other big tech companies usually have “at-will” employment on both sides. Just know that it very well might be an option for you.

Many places, as in physical places. Google definitely has notice periods enforced by law in Europe.

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What places?

Three months is fairly common in Sweden, and longer than that isn't all that rare (often depends on how long you've worked at the company).

In Germany at least 4 weeks depending on how long you have been with the company up to 7 months.

Other countriesin the world, besides the US. In European countries you can't just tell someone tonnit come tomorrow and not pay anything. Sure you csn tell them to not come anymore if you want to keep your secrets or whatever but the company has to pay for this notice period like the person was working there.

When I or colleagues have changed jobs then we have given a month or more notice, continued working etc. Only when someone is fired for total incompetence or just not showing up you don't want to see them anymore ever in the office so the company pays for the notice period time.

Varies by province in Canada but generally there is a fixed amount of time you need to be at the company before they can just kick you out. For example in Alberta if you've been with an employer longer than 2 years you must give them 2 weeks. They can terminate you immediately after you resign, but they own you 2 weeks of pay.

Likewise, if the company lays you off, they have to give you up to 8-weeks notice depending on how many years you were with the company; 10+ years warrants the full 8-weeks, while 2-4 years in service gets you 2-weeks. These are also mandatory minimums; some companies or employees with contracts or collective agreements may get / offer more.

Plenty of loopholes there, like for "just cause", and some industries are "exempted by custom" or by law, like construction or forestry.

* https://www.alberta.ca/termination-pay.aspx

I know it’s common in Switzerland, Italy and France.