Notice period

In employment contracts, a notice period is a period of time between the receipt of the letter of dismissal and the end of the last working day. This time period has to be given to an employee by their employer before their employment ends. It also refers to the period between resignation date and last working day in the company when an employee resigns.
Statutory redundancy notice periods in the UK.
In the United Kingdom the statutory redundancy notice periods are:
These statutory periods constitute the minimum notice period to be given by the employer; however, some employers may opt to give employees longer notice periods, in order to give the employees a better opportunity to find alternative employment.
Notice periods in Poland.
In Poland the same notice period applies regardless which party (employer or employee) withdraws the contract. The statutory periods apply, unless both parties agree on other terms:
The week-measured period ends on Saturday. The month-measured period ends on the last day of calendar month—for instance, if 1-month period applies, a resignation or dismissal produced between 1st and 30 April results in contract termination on 31 May.
Notice periods in the United States.
Because most employment in the U.S. is at-will, no notice period is required. In practice, most employees provide two weeks' notice.
Notice periods in Denmark.
Notice periods for white collar workers are defined in the Danish Law on Salaried Employees or "Funktionærloven", which are:
If the employee resigns, he/she has to give a 1-month notice period.
Notice periods in Switzerland.
Notice periods in Switzerland are governed by the Code of Obligations, which sets the default time scales. The notice period depends on the employee’s length of service within the company as follows:
The default trial period is the first month of employment, but may be extended up to three months. After the trial period, the notice period may be amended by a written contract, but not under one month, unless set by a collective labor agreement and only for the first year of employment.