His boss 'assured' him that he had her continued support. = His boss 'assured' him of her continued support. = “You have my continued support,” his boss 'assured' him.
You can 'rest assured' [=you can be sure] that these mistakes won't happen again. = 'Rest assured', these mistakes won't happen again.
They are not 'assured of' being paid. [=it is not certain that they will be paid]
(..) You saved her. Susannah's alive and well. 'On the one-year anniversary of his humiliating ordeal, 'an apparently unconcerned Michael Callow put in an assured performance 'at a public appearance, accompanied by his wife Jane. 'OK. 'The other central figure in events was also before the camera (..)2011 TvShow: Black Mirror Title: The National Anthem Season: 1 Episode 1