P60s are issued by employers for individuals employed at the end of the tax year - see here:
If one is unemployed in December then who issues the P60?A P60 is a form issued by an employer to an employee certifying details of the employee's pay, tax and PRSI contributions for the tax year. The Form P60 must be given to each employee who is in employment at 31 December on any given year for the short tax "year" and each subsequent 31 December.