Checked dipstick, oil level well within the hatched area of the dipstick ( the safe zone on the dipstick)
 
Does the oil level sensor go bad?

Yes, they can go bad...
 
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Thanks, Scot.  Will replace.  Have a cold one on me.

BTW, some, especially Briggs, when they activate (or fail), they kill 
MOST of the spark at the plug if not all spark.  
 
It's not un-common on generators.  For the Briggs, if you have a full oil
level but lost spark, the switch can be by-passed by simply un-plugging it.  
 
Not a biggon, just check the oil level when re-fueling...
 
Have a Happy New Year!
 
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The part costs 25 bucks.  BFD.  Just buy the switch and be done with it.  Jeez, in my area the generator guys charge 250 to 300 bucks to do a fly-by.