ILR: Tier 2 General + Tier 2 ICT

Hello All,

Can you please help me with this question on SET(O) Form?

Point 11P:

For the period before you were granted leave as a Tier 2 migrant, documents showing that you met the relevant requirements of the immigration rules for the period in question as specified below:

If you were a work permit holder, documents confirming that you were in the employment for which a work permit was issued throughout the period concerned

Can anyone please tell me which documents should I provide to prove the above point?

Will P60 for those years and my original workpermit enough?

Regards,
Rajesh