Labor relations

[motico]

Please, check if the following passage is grammatically correct. Thanks!

And indeed, the last months' strategy of the management had totally failed when it has turned out that the management's threats to go to arbitration have neither scared the workers nor brought their leaders to surrender to the management's demands while, at the same time, they haven't provided the management with accomplishments to boast of. Instead, they've underscored the depth of the trade union's commitment to the workers and have unexpectedly and even surprisingly strengthened Mr. Smith.

[billmcd]

Please, check if the following passage is grammatically correct. Thanks!

And indeed, the last months' (two or more months ? OK. If one month: month's.)strategy of the management had totally failed when, as it has turned out, that the management's threats to go to arbitration have neither scared the workers nor brought their leaders to surrender to the management's demands. whileBut , at the same time, they haven't provided the management with any accomplishments to boast of. Instead, they've underscored the depth of the trade union's commitment to the workers and have unexpectedly, and even surprisingly strengthened Mr. Smith.

Suggestions.

[motico]

Actually, is more than one month. Should I write: "the last few months'..."?

[bhaisahab]

"And indeed, the strategy of the management over the last few months has totally failed. It turns out that their threats to go to arbitration have neither scared the workers nor brought their leaders to surrender to the demands. At the same time, they haven't provided themselves with any accomplishments to boast of. Instead, they've underscored the depth of the trade union's commitment to the workers and have unexpectedly, and even surprisingly strengthened Mr. Smith."
I would write it like that.