The Protection of Employees (Part-Time Work) Act 2001 aims to implement Directive 97/81/EC, ensuring fair treatment for part-time employees. It mandates that part-time workers receive no less favourable conditions of employment compared to full-time counterparts, unless justified by objective grounds. The Act includes provisions for employees working on a casual basis, permitting some differential treatment under specific circumstances, provided such treatment is objectively justified.

The Act also establishes processes for employees to present complaints regarding discrimination in employment conditions and prohibits employer penalisation for exercising rights under this legislation. Furthermore, it includes the Labour Court's role in approving collective agreements related to part-time work, fostering fair practices while ensuring compliance with relevant labour laws.