Any company that wishes to allow it's employees shorter hours is presently at liberty to do exactly that.
The government has no business imposing any such absurd regulations on business.
As far as addressing the unemployment issue, it could only make things worse. Assume a job that current takes 40 hours per week is split into two half-time shifts filled by two men.
Neither man will take home enough pay to live on, thus both men and their families will be requesting support from taxpayers where only one was begging before.
The cost of any ancillary benefits like health care won't be cut in half, so the two employees either jack up the employer's premiums, boosting his cost of goods per man-hour, or they pay a larger share of their health insurance, further reducing their take-home pay, or the employer drops the policy completely, and more families become wards of the state's public medical system.
No, forcing employers to cut work hours is silly.