What is a job function?
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.
Job functions help employers define workplace roles, organise teams, and set clear job responsibilities and duties.
What does a job function include?
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:
- Key role responsibilities
- Required skills or qualifications
- Decision-making authority
- Team or client interaction
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.
Job functions and fair hiring
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.
Why job functions matter in the workplace
For employers, defined job functions help with:
- Setting clear expectations
- Supporting performance reviews
- Organising workplace roles more effectively
A well-defined job function keeps teams aligned and reduces those classic “I thought someone else was handling it” situations.
Job function vs job title
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.
| Job title |
Job function |
| Name of the role |
Purpose of the role |
| Often used externally |
Focuses on day-to-day responsibilities |
| Helps define seniority |
Explains job duties and tasks |
| Example: Sales Manager |
Example: Managing sales targets and client relationships |
Job function examples
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.
How job functions are used in HR
HR teams use job functions to manage the entire employee lifecycle, from hiring through to performance reviews and promotions.
Job functions are commonly used for:
- Writing accurate job descriptions
- Setting salary bands and seniority levels
- Measuring employee performance
- Identifying training needs
- Supporting fair recruitment decisions
- Managing promotions or role changes
In many businesses, they also help reduce confusion between departments by clearly outlining who is responsible for what.
FAQs
1. Is job function the same as job description?
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.
2. What are basic job functions?
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.
3. Can one job title have different job functions?
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.
