The verse on the Ten commandments, also read in Kidusha Raba by certains (Exodus 20, 8-9) says
שֵׁ֤שֶׁת יָמִים֙ תַּֽעֲבֹ֔ד וְעָשִׂ֖יתָ כָּל-מְלַאכְתֶּֽךָ: וְיוֹם֙ הַשְּׁבִיעִ֔י שַׁבָּ֖ת לַֽיהוָֹ֣ה אֱלֹהֶ֑יךָ לֹא-תַֽעֲשֶׂ֨ה כָל-מְלָאכָ֜ה אַתָּ֣ה | וּבִנְךָ֣-וּבִתֶּ֗ךָ עַבְדְּךָ֤ וַֽאֲמָֽתְךָ֙ וּבְהֶמְתֶּ֔ךָ וְגֵֽרְךָ֖ אֲשֶׁ֥ר בִּשְׁעָרֶֽיךָ: Is there a factor of merit to observe and rest on Shabbat? If people don't labor and work throughout the six days of the week, do they deserve Shabbat?
Six days shalt thou labour, and do all thy work; but the seventh day is a sabbath unto the LORD thy God, in it thou shalt not do any manner of work, thou, nor thy son, nor thy daughter, nor thy man-servant, nor thy maid-servant, nor thy cattle, nor thy stranger that is within thy gates;
What about people who are unemployed and idle -- but "idle" in the sense that, even though have degrees and are very well qualified for work in several fields, they simply haven't found employment opportunities for many months, due to the jobs market's high competition and saturation? Do they have to find some kind of "work" in order to "deserve" Shabbat?