This was an approximation of Norway's rules and was not a load of bullshit. Briefly, firing someone is only allowed if their position is no longer necessary and no alternative position exists, the company needs to reduce its headcount or if the employee has significantly derelicted their duties. There are significant judicial details that usually count in the employee's favor.

Standard terms in employment agreements is three months' notice, although as little as one month may be agreed upon when employment starts. The agreed notice period can only rarely be deviated from without mutual agreement.