Understanding Zero Hour Contracts as a Locum

In the dynamic field of veterinary medicine, locums play a crucial role in filling temporary gaps and ensuring seamless patient care. However, the nature of employment for locums often involves a unique arrangement known as zero-hour contracts. In this blog post, we will delve into the intricacies of how zero-hour contracts function for locums.

Understanding Zero Hour Contracts

Zero-hour contracts are employment agreements where the employer is not obligated to provide a minimum number of working hours, and the employee is not obliged to accept any hours offered. Key part to note is these contracts are specific to one practice only.


  1. Minimal Tax Responsibilities: One of the advantages of zero-hour contracts for locums is the reduced tax burden. Unlike other employment arrangements, zero-hour contracts often come with simplified tax obligations, providing a straightforward financial arrangement for individuals. You will also be IR35 complaint.

  2. Team Continuity with Time Flexibility: Another positive aspect of these contracts is the ability to work consistently with the same veterinary team while maintaining flexibility with your schedule. This unique balance allows locums to establish rapport with colleagues and maintain a supportive working environment without compromising their desired flexibility.

  3. Diversify Income with Concurrent Contracts: Locums can strategically leverage the flexibility of zero-hour contracts to diversify their income streams. By taking on additional contracts alongside other employment or business ventures, individuals can maximise their overall income and create a more stable financial foundation. This versatility enables locums to explore various opportunities within and outside the veterinary field.


  1. Income Stability: One of the main challenges is the lack of guaranteed income. Locums may experience fluctuations in workload, leading to unpredictable financial stability.

  2. Limited Employment Benefits: Zero-hour contracts may not always come with traditional employment benefits such as health insurance, paid time off, or retirement plans. Locums need to carefully consider these factors and make provisions for them independently.

  3. Ambiguity in Employment Status: A notable challenge arises when working solely under one zero-hour contract, as the classification as an employee can introduce ambiguity. In such cases, identifying oneself as a locum may be a grey area, potentially affecting professional identity and legal distinctions. It’s essential to navigate this ambiguity carefully and seek clarity on employment status to ensure compliance with relevant regulations and professional standards.

Additional Information to Consider:

It’s important to note that zero-hour contracts are prevalent in corporate, charitable organisations, and university settings. In such cases, zero-hour contracts may be the primary or only option available.

It’s crucial for locums to be aware that the classification of their contract can impact entitlements such as holiday pay and a pension.

While some zero-hour contracts classify individuals as employees, providing these benefits, others may categorise them as ‘workers,’ thus excluding such privileges. Reading the contract carefully is essential to fully understand the terms and conditions associated with the specific zero-hour arrangement.

Tax Considerations:

While zero-hour contracts can offer flexibility, it’s imperative to consider the tax implications. In the UK, if you take on more than two zero-hour contracts, it may not be financially advisable due to the potential increase in tax liability.

However, it’s worth noting that having a zero-hour contract alongside self-employment or operating under a limited company structure is a viable option.

On the contrary, pairing a zero-hour contract with an umbrella company may not be advantageous, as both arrangements essentially serve the same purpose.

Understanding the tax implications and choosing the right combination of work contracts is crucial for financial planning and optimising your income in the locum veterinary field.


While zero-hour contracts bring flexibility and variety to the lives of locums, they also present challenges that require careful consideration and proactive planning. By understanding the nuances of these employment agreements and implementing strategic measures, veterinary professionals can successfully navigate the dynamic world of locum work, ensuring a fulfilling and sustainable career.