How Many Jobs Can You Have in the UK? Guide to Multiple Employment

There is generally no fixed legal limit on the number of jobs an adult can have in the UK. You can work for more than one employer, combine employment with self-employment, or take on part-time work alongside a main job. However, your working hours, employment contracts, tax position, benefit entitlement and any immigration conditions all need to be considered. GOV.UK confirms that someone can be employed and self-employed at the same time.

This guide explains the main things to check before taking a second or third job, including the 48-hour working week, contracts and exclusivity clauses, tax, National Insurance, Universal Credit and practical ways to manage multiple jobs.

Can You Have More Than One Job in the UK?

Yes. Having two or more jobs is possible in the UK, provided you meet the requirements that apply to each role and can comply with your contractual obligations.

The important point is that the number of jobs is not usually the main issue. What matters is whether your combined working arrangements create problems with working-time rules, your employment contracts, conflicts of interest, tax, immigration conditions or other legal requirements.

What to Check Before Taking a Second Job

What to check	Why it matters
Working hours	Your combined working time can be relevant to the 48-hour average working week.
Employment contract	Your contract may contain terms about other work, confidentiality or conflicts of interest.
Tax code	HMRC normally uses separate tax codes for different employments.
National Insurance	National Insurance is normally calculated separately for different employments, subject to specific rules.
Benefits	Additional earnings can affect payments such as Universal Credit.
Immigration conditions	If your right to work is subject to immigration conditions, check what additional work is permitted.
Rest and wellbeing	Multiple jobs can make it harder to maintain adequate rest and a sustainable routine.

Working Hours When You Have Multiple Jobs

For most adult workers, the working-time rules generally limit average working time to 48 hours a week. If you have more than one job, your combined working hours should be considered rather than looking at each job separately. The normal reference period for calculating the average is 17 weeks, although different arrangements can apply in some situations.

This does not mean you can never work more than 48 hours in a particular week. The limit is normally based on an average over the relevant reference period.

Can You Opt Out of the 48-Hour Week?

If you are over 18 and the rules apply to you, you can generally agree in writing to opt out of the 48-hour average limit. The decision must be voluntary. An employer cannot dismiss you or treat you unfairly simply because you refuse to opt out. Some occupations have different rules and restrictions on opting out.

Do You Add the Hours From Both Jobs?

Generally, yes. If you work for two employers at the same time, your combined working hours can count when assessing the 48-hour average. GOV.UK specifically states that people with more than one job should consider their combined working hours.

Check Your Employment Contracts

Before accepting another job, read your existing employment contract and staff handbook carefully. Jobdoor’s UK employment contract guide can help you identify important terms. You may also want to review our guide on spotting problems before accepting a job. Look for clauses covering additional employment, conflicts of interest, confidentiality, competition, working hours and disclosure of other work.

An employment contract can contain legally binding terms, and employees and employers are expected to follow the agreed terms while the contract is in force.

Exclusivity Clauses

Some employment arrangements include exclusivity terms that restrict additional work. The rules depend on the type of contract and earnings. For example, current GOV.UK guidance says employers cannot include or enforce exclusivity clauses in zero-hours contracts or contracts where workers earn less than or equal to the lower earnings limit.

Do not assume that an exclusivity clause automatically makes every second job unlawful, or that every restriction can be ignored. Check the exact wording and, where necessary, obtain independent employment-law advice.

Conflicts of Interest

A second job can create a conflict if you work for a competitor, use confidential information from one employer for another, or allow one role to interfere with your responsibilities in the other. Keep company information, equipment, accounts and working time separate.

How Having Multiple Jobs Affects Tax

You normally receive only one Personal Allowance for a tax year, even if you have income from several jobs or other sources. HMRC normally allocates your allowance between your employments and each employment can have a different tax code.

For example, one employment might use a tax code that includes your Personal Allowance, while another may use a code such as BR or D0 depending on your circumstances. Your actual tax position depends on your total taxable income and the applicable rules.

Check Your Tax Codes

When you start another job, check your HMRC details and tax codes. If an employer or income source is missing or the information is wrong, HMRC provides online services and an app for updating employment and income details. Keeping your information accurate can reduce the risk of paying too much or too little tax during the year.

What About National Insurance?

National Insurance is separate from Income Tax. If you work for different employers at the same time, National Insurance contributions for each employment are normally calculated separately, although specific rules can require earnings to be aggregated in some circumstances.

If your pay or employment circumstances change significantly, check your current position with HMRC rather than relying on a calculation from an older article or a previous tax year.

Can You Have Multiple Jobs and Claim Universal Credit?

Having more than one job does not automatically prevent someone from receiving Universal Credit. GOV.UK states that there is no limit on how many hours you can work and still receive Universal Credit. However, your earnings affect how much you receive.

For most employed claimants, Universal Credit reduces as earnings increase. Some people may qualify for a work allowance before their payment starts to reduce, depending on their circumstances.

If you combine employment with self-employment, different rules can apply. GOV.UK explains that Universal Credit can take combined employment and self-employment earnings into account.

Multiple Jobs and Your Right to Work

If you are working in the UK under a visa or another immigration permission, check your specific right-to-work conditions before taking additional employment. Do not assume that because you can work in one role, every type of second job is automatically permitted.

If you are unsure, check the current GOV.UK guidance for your immigration status or obtain advice from an appropriately qualified immigration adviser.

How to Manage Two or More Jobs

• Create one combined schedule: Put every shift, meeting and deadline into one calendar.
• Track your total hours: Keep a simple weekly record for all jobs.
• Protect rest time: Avoid creating a schedule that leaves you constantly working or travelling.
• Keep work separate: Use the correct equipment, accounts and files for each employer.
• Plan travel carefully: Make sure commuting between jobs does not make your schedule unrealistic.
• Review your workload: If performance starts to suffer in either job, reassess your hours.
• Keep tax records: Save payslips and check your HMRC information when you start or leave a job.

Advantages and Challenges of Multiple Employment

Potential advantages	Potential challenges
Additional income	Less free time
More than one source of employment experience	Fatigue and limited recovery time
Opportunity to build new skills	Scheduling conflicts
Greater flexibility in some arrangements	Possible contract or conflict-of-interest issues
Ability to test a different career area	More complicated tax and payroll administration

When Having a Second Job May Not Be Practical

A second job may look attractive financially but still be difficult to maintain. Consider whether the combined hours, commute, family responsibilities, study or other commitments leave enough time for rest and normal life.

It is also worth checking whether a second job is the best solution for your goal. In some cases, increasing hours in your main role, developing a new skill, applying for a better-paid position or taking occasional freelance work may be more manageable.

Questions to Ask Before Taking Another Job

• Does my current contract allow additional employment?
• Do I need to tell my current employer?
• Could the second job create a conflict of interest?
• What will my combined weekly working hours be?
• Will I have enough rest between shifts?
• How will the additional income affect my tax code?
• Could my benefits be affected?
• If I have immigration restrictions, is the additional work permitted?
• Can I realistically maintain good performance in both roles?

Frequently Asked Questions

Is there a legal limit to how many jobs I can have?

There is generally no fixed number of jobs that an adult can hold. However, working-time rules, contracts, tax, immigration conditions and other requirements can affect whether your particular arrangement is allowed.

Can I have two full-time jobs?

It may be possible in some circumstances, but the combined hours can raise working-time issues and you must check both contracts and any other restrictions that apply to you.

Will I pay more tax if I have two jobs?

Your total taxable income is relevant to your Income Tax position. You normally receive one Personal Allowance, which HMRC may allocate between your employments.

Can I have a second job if I receive Universal Credit?

Possibly. Universal Credit can continue while you work, but your earnings can affect the amount you receive.

Do I need to tell my employer about another job?

Check your contract and workplace policies. Some arrangements require disclosure of additional employment, and even where disclosure is not specifically required, you should consider conflicts of interest and your ability to meet your existing responsibilities.

Final Checklist

• Read both employment contracts.
• Check for exclusivity and conflict-of-interest terms.
• Add together your working hours.
• Understand whether the 48-hour average limit applies to you.
• Check your HMRC tax codes and employment details.
• Keep track of National Insurance and payslips.
• Check how additional earnings may affect Universal Credit or other benefits.
• Check any immigration or right-to-work conditions.
• Make sure the schedule leaves enough time for rest and personal responsibilities.

Having multiple jobs can be a useful way to increase income or build experience, but the arrangement needs careful planning. If you are also considering remote work, see Jobdoor’s guide to working effectively from home. You can also compare multiple employment with second jobs in the UK and other flexible career options. The safest approach is to check your contracts, calculate your combined hours, keep your tax information up to date and confirm any benefit or immigration conditions before you start additional work.

About the Author

Jobs & Insights Team

The Jobs & Insights Team provides practical information about job roles, internships, career paths, skills and employment opportunities to help readers make informed decisions.