EOR vs contractor: Which is better for UK businesses in 2026?
Read more
Job function
The main purpose of a role within a business, explaining what an employee is expected to do and manage.
A job function is the main purpose of a role within a business. It explains what an employee is expected to do, contribute, and manage as part of their day-to-day work. Â
Job functions help employers define workplace roles, organise teams, and set clear job responsibilities and duties.
A job function usually includes the core tasks, responsibilities, and outcomes linked to a role. It helps employees understand what they are accountable for and helps employers set expectations clearly.
A job function may include:
In many businesses, job functions also form part of the wider job description and help define essential job functions for hiring, training, and performance reviews.
Clear job functions help create fairer hiring processes. When employers define the essential job functions, duties, and responsibilities of a role, candidates can be assessed against what the job actually requires rather than assumptions about their background.
This approach reflects a wider shift in recruitment. Recent research found that 77% of UK employers now use skills tests during hiring, placing greater emphasis on a candidate’s ability to perform the role rather than relying solely on qualifications or previous job titles. Clear job functions make those assessments more consistent and objective.
For employers, defined job functions help with:
A well-defined job function keeps teams aligned and reduces those classic “I thought someone else was handling it” situations.
A job title is the name of a position, while a job function explains what the person actually does. Two employees may share the same job title but have different responsibilities depending on the business, department, or seniority level.
For example, a “Marketing Executive” in one company may focus on social media, while another handles email campaigns and reporting. The job function provides practical details behind the title.
A growing marketing agency in Manchester hired a “Content Executive” to write blogs and social posts. Within a few months, the employee was also handling client calls, uploading website content, and tracking SEO reports because nobody had clearly defined the job function.
The business assumed the role covered “a bit of everything”. The employee assumed those extra tasks belonged to the account management team. Deadlines started slipping, clients became frustrated, and work was duplicated.
After rewriting the job description with clear job functions and responsibilities, the team worked far more efficiently.
HR teams use job functions to manage the entire employee lifecycle, from hiring through to performance reviews and promotions. Â
Job functions are commonly used for:
In many businesses, they also help reduce confusion between departments by clearly outlining who is responsible for what.
No. A job function explains the main purpose and responsibilities of a role, while a job description is a broader document covering duties, skills, reporting lines, qualifications, and expectations.
Basic job functions are the core tasks an employee must perform to do their role properly. These are often referred to as essential job functions within a workplace or contract.
Yes. The same job title can involve different responsibilities between companies. A “Marketing Manager” in one business may focus on strategy, while another handles social media and content creation.
