What is direct age discrimination?

Section 13 of the Equality Act 2010 defines direct age discrimination as being where, because of the protected characteristic of age, person A unjustifiably treats person B less favourably than person A treats or would treat other persons.

For example, if an employer were to have a policy that only candidates aged 20 to 35 could apply for a position, it would be treating those outside that age group less favourably than those within it, because of their age. This would therefore be direct age discrimination, unless the employer could justify the policy.