How can part-time workers' rights to indivisible benefits such as company cars be dealt with?

Access for part-time workers to indivisible benefits, such as company cars or health insurance, can cause problems. Employers must ensure that part-time workers are not treated less favourably than comparable full-time workers in relation to their terms and conditions. One way of dealing with this would be to provide a cash allowance, equivalent to the pro rated value of the benefit.