In the UK almost all workers are entitled to a statutory 5.6 weeks or 28 days paid annual leave on a full-time basis. This can be inclusive of your Bank or Public Holiday entitlement so you may have a contract that offers 20 days annual leave plus fixed bank holidays you must take. If you work part-time or in a Job Share, you can usually take the same number of weeks vacation but will be entitled to less days off as you work fewer days per week. Employers must ensure that all employees receive the statutory minimum holiday allowance and that Job Shares or part-time employees are treated equivalently to full-time employees. If you feel your employer is penalising you beyond pro-rata of your holiday or any other benefit, you may be able to make a claim at an employment tribunal, see Citizen Advice help here.