Certificate of Sponsorship (CoS): A Comprehensive and Detailed Guide for UK Employers

To legally sponsor skilled overseas workers in the UK, employers must issue a Certificate of Sponsorship (CoS) to each prospective employee before they can submit a visa application. The CoS serves as an electronic record containing crucial details about the worker and the role being offered. This guide covers everything you need to know about CoS types, application processes, and best practices to ensure smooth sponsorship and compliance with UK Visas and Immigration (UKVI) requirements.

What is a Certificate of Sponsorship (CoS)?

A Certificate of Sponsorship (CoS) is an electronic document assigned by a licensed sponsor to an overseas worker, confirming that the worker is eligible for a specific job in the UK. It contains essential details such as the job title, salary, and employment start date. Without a valid CoS, the worker cannot apply for a Skilled Worker visa or other sponsored visa types.

Each CoS has a unique reference number that the worker uses when applying for their visa. The CoS does not guarantee a visa grant but is a prerequisite for the visa application process.

Types of Certificates of Sponsorship (CoS)

Employers can assign two types of CoS based on the worker’s location and the visa category:

• Undefined Certificate of Sponsorship (Undefined CoS)
• Defined Certificate of Sponsorship (Defined CoS)

1. Undefined Certificate of Sponsorship (Undefined CoS)

An Undefined CoS is intended for workers who:

• Are already in the UK and applying for a visa under the Skilled Worker route.
• Are applying under other visa routes, such as the Intra-Company Transfer or Minister of Religion routes.

How to Apply for an Undefined CoS

• Evidence of Business Needs: Provide details such as future recruitment plans.
• Supporting Documentation: Submit employment contracts, job descriptions, or hiring records.

Annual Allocation and Renewal

• Expiry Date: Unused Undefined CoS expire on 5 April each year.
• Renewal Process: Submit renewal requests before the deadline to avoid delays.
• Late Requests: Additional Undefined CoS can be requested during the year if needed.

2. Defined Certificate of Sponsorship (Defined CoS)

A Defined CoS is for workers applying for a Skilled Worker visa from outside the UK. Employers must request a Defined CoS through the Sponsorship Management System (SMS).

Application Process for Defined CoS

• Submit a Request: Apply through the SMS portal.
• Processing Time: Usually processed within 1-2 working days.
• Assign Promptly: Assign within 3 months to avoid expiration.

Best Practices for Managing Certificates of Sponsorship

• Plan and Forecast: Estimate CoS needs accurately.
• Timely Renewals: Submit requests before 5 April.
• Accurate Records: Keep detailed records of CoS usage.
• Compliance: Ensure HR systems follow UKVI rules.

Ensure your business is ready to sponsor skilled overseas workers. Contact us today for expert guidance on managing Certificates of Sponsorship.