See that is why

.. There isn't much information regarding the actual Oinp Filling part, and I asked couple of people on the forum who went through OINP everyone had different recommendations. So I went with with the wordings of the oinp application.
""Work History
List all of your paid work experience in the last ten years (or since the age of 18, if this was less than ten years
ago). Start with your current or most recent occupation.""
As the other activities part only asked parts other then paid work and education.
""Other Activities (excluding education and paid work)
Do you have any other activities, excluding education and paid work history, in the last ten years (or since the
age of 18, if this was less than ten years ago)? *
Provide details of your other activities, excluding education and paid work history, in the last ten years (or since
the age of 18, if this was less than ten years ago). Activities may include travel (personal or business), training,
unemployment, volunteer work, sick leave, parental leave, etc. When combined with your education and work
history, there should be no gaps in time. Start with your most recent activity. *""
My one job fullfills all of the oinp and express entry requirements. Other jobs are just bonus

extra from the minimum requirement.
I put an LOE in the app for anything that i felt like i should explain and tried to make the application air tight as much as possible.
When did you file yours ?