Paternity leave length varies significantly depending on the country and specific laws or employer policies:

• United States (Federal level): Eligible employees can take up to 12 weeks of unpaid paternity leave under the Family and Medical Leave Act (FMLA) if they work for companies with 50 or more employees and meet other criteria. However, most fathers take only about 10 days on average due to financial reasons

• California: Fathers can take up to 12 weeks of unpaid paternity leave under the California Family Rights Act (CFRA) with job protection, and up to 8 weeks of partially paid leave through the state's Paid Family Leave (PFL) program

• New York: Paid Family Leave provides eligible employees up to 12 weeks of job-protected, paid time off to bond with a new child

• United Kingdom: Fathers can take either 1 or 2 weeks of paid paternity leave, which must be taken consecutively if two weeks are chosen. The leave must be used within a specified time frame after the birth

• Ireland: Paternity leave is 2 weeks, which can be taken within the first 6 months after the birth or adoption

• Turkey: Paternity leave is 5 days for workers and 10 days for public employees, starting from the date of birth

In summary, paternity leave ranges from a few days (e.g., 5 days in Turkey) to up to 12 weeks (e.g., in some U.S. states like California and New York), with variations in whether the leave is paid or unpaid and eligibility requirements depending on jurisdiction