Can an employer treat part-time workers less favourably than it treats full-time workers?

Employers cannot treat part-time workers less favourably than they treat full-time workers, unless such treatment can be objectively justified. The Part-time Workers (Prevention of Less Favourable Treatment) Regulations 2000 (SI 2000/1551) state that part-time workers must not be treated less favourably than comparable full-time workers as regards the terms of their contract or by being subjected to any other detriment by the employer on the ground that they work part time. For example part-time workers must not be treated less favourably than full-time workers in matters relating to pay, overtime premium payments, holiday and holiday pay, sickness benefits, selection for redundancy, access to pension schemes and other contractual benefits, unless this is objectively justified.