[UK-AL]

There's no such thing as probation period in law. It's a company specific thing. The laws the same if your own a probation period or not.

[krzyk]

In Poland there is such thing as probation in law, so you should specify what country are you talking about.

[pascalo]

In German law there is. In Australia unfair dismissal can only be claimed after 6 months of employment. Not really sure about the UK, but I am fairly sure it's not just cut throat firing like in the US, and you can claim unfair dismissal.

[DanBC]

UK you can claim unfair dismissal after 2 years, unless there's Equalities Act stuff happening.