And what happens if they sign and then dont uphold their end of the bargin Jail time ? Deportation, tarred and feathered ? Put in stocks and get rotten tomatos thrown at them

Seems to me this is a completely hollow/useless document if there are no consequences for breach of contract

Obviously a scheme dreamed up by some leftie luvvie

Well, let me tell you that at times things move slowly, but steadily in the Netherlands. This is a pragmatic approach. Even with

"The participation declaration programme will form the first part of the main integration course and people who refuse to sign could be fined up to €1,250.
"

Of course as part of the official 'integration course" non_EU immigrants (and student as well I think) seem to need to follow the declaration is the culmination of the course, like a diploma. No details, but I guess people who don't sign fail the course and two or three failures you're out.

Typically the Dutch uncle approach 

Some research.

Unwritten constitutional law
Some of the most basic fundamental laws in the Dutch constitutional system are not explicitly expressed in the written Constitution. These include the rule that the Dutch monarch cannot dissolve the House of Representatives more than once because of a conflict over a single political issue[citation needed] and that the Senate shall never block legislation for mere party politics,[citation needed] so that coalition governments (all Dutch governments since the 19th century) do not need a majority in the Senate.

The unwritten laws are most influential when a cabinet is formed; the procedure is not regulated by the Constitution but based on tradition and more recently on regulations established by the House of Representatives. At the eve of the elections the sitting cabinet offers its resignation to the monarch, who takes it into consideration; the cabinet is now "demissionary". After the elections the King consults his advisors. The chairman of the House of representatives then appoints an "informateur" who explores the possibilities of a coalition cabinet. Because of the Dutch multi-party system, no political party (in the modern sense) has ever obtained a majority by itself. On the basis of the information process the chairman then appoints a "formateur" who literally forms the government by negotiating a coalition agreement between the coalition parties and the division of the ministerial posts between the parties. He also meets with candidate ministers and often becomes Prime Minister himself. The King then dismisses the sitting cabinet and appoints the new one. If the procedure turns out to be problematic, the House can ask the king to play a role in the formation process.

In common law systems these rules would not be seen as laws but as mere legal conventions as they cannot be upheld by judges; within the Dutch civil law system, however, they are part of the more extended Dutch-German legal concept of the Recht, the total "legal" normative structure, be it written or unwritten, so that they have full normative force. Indeed, that force is much larger than with written constitutional rules;[citation needed] any breach of the unwritten rules would cause an immediate constitutional crisis.

Refusing to sign and being fined and signing, but not following the T&Cs of the declaration are two different things, i would be interested in what the consequences are in the case where one signs and doesnts follow the "contract" as mentioned previously if there are no consequences for "breach" then the declaration is not worth the paper its written...

Telling some one "aw but you promised" and putting them in the naughty corner for 15 minutes  is hardly a consequence 

But for this to be true this would have to be legally enforceable contract, which i would think under English contract law would be pushing the limit to declare this declaration an enforceable contracts, certain if the conditions which would constitute breach are not specified this cannot be an enforceable contract,

Dutch law not sure how it works, but under Anglo/Dutch law al la South Africa, the view would be similar to English law 

I promise to eat at least a pound of cheese every day.

Signed

Smokie