Choose the correct form of the phrasal verb for the given sentence:
The restructuring plan formulated by experts has ______ well for the company.

'work out' means to be successful or develop in a particular way:
Example Sentence: I hope your new job works out.
So, 'worked out' is the correct answer.
The correct sentence is - The restructuring plan formulated by experts has worked out well for the company.

Source: Cambridge Dictionary