To stay compliant during remote work abroad and business trips, social security certificates and local registrations must be arranged before the trip starts. To let WorkFlex apply for A1s, Certificates of Coverage, and Posted Worker registrations on your behalf in the United Kingdom, you'll need to complete the steps below.
Quick overview
There are three documents involved in this process, used at different points:
Document | Purpose | Sent to |
1. Power of Attorney (PoA) | Authorizes WorkFlex to act on your behalf with UK authorities | Your Customer Success Manager (CSM) |
2. Form CA3821 | Confirms to HMRC your company is eligible to apply for A1 certificates | HMRC & Customer Success Manager (CSM) |
3. Form 64-8 | Authorizes WorkFlex to deal with HMRC directly going forward | Customer Success Manager (CSM) |
Steps 1 and 3 can be started at the same time; as it requires the filing and signature of the same person (legal representative). It is preferable to start step 2 as soon as possible as it has a long processing time.
Step 1: Complete and submit form CA3821 to HMRC
Before WorkFlex can apply for an A1 Certificate, HMRC must confirm your company is eligible. This form gets you that confirmation.
Complete: Form CA3821, either electronically or by hand.
Submit to HMRC:
Electronic submission: follow HMRC's instructions for submitting online.
Postal submission: send it to the HMRC address listed on the form.
Submit: send a copy of the application form to your dedicated Customer Success Manager.
Typical HMRC processing time can vary, it normally takes up to 60 days to receive an eligibility confirmation letter.
Step 2: Sign and submit the Power of Attorney (PoA) to WorkFlex
This authorizes WorkFlex to act on your behalf when dealing with UK authorities.
Download: Power of Attorney Template.docx
Sign: an authorized representative of your organization must sign it.
Submit: send the signed copy to your dedicated Customer Success Manager.
Step 3: Fill and sign form 64-8:
· Download: Form 64-8
· Fill & Sign: It authorizes WorkFlex to deal directly with HMRC on UK social security certificates. Just fill in your company's details — no boxes need to be ticked.
· Submit: send the signed copy to your dedicated Customer Success Manager.
Step 4: Receive your eligibility confirmation and share it with WorkFlex
Once HMRC processes your CA3821 form, they'll send you a letter confirming eligibility within 60 days of submission.
Receive the eligibility confirmation letter from HMRC.
Forward the letter to your Customer Success Manager.
Checklist
CA3821 completed and submitted to HMRC and copy of the application sent to CSM (Step 1)
PoA signed and sent to CSM (Step 2)
Form 64-8 signed and sent to CSM (Step 3)
CA3821 eligibility confirmation received and shared with CSM (Step 4)