ILR WP 5 yrs

Hi,

I am on work permit and will be applying for ILR in july and i am with same employer from last 5 yrs.

in the documents to be submitted for workpermit holder in SET(O) form .What is the document i need to show for below :(Employer Letter or Workpermit approval letter)

Document(s) confirming that you have spent a continuous period of 5 years in the UK:
- either as a work permit holder throughout that period

Please let me know as i am not sure of this..

See also ILR Success Glasgow PEO - WP migrant