Shopworkers' union Usdaw said many retail staff injured in armed robberies and assaults would lose out.
John Gorle from the trade union USDAW, said the "only option" was to find a buyer.
Mr Henry's bill won support from shop-workers union Usdaw, the Scottish Grocers' Federation and the Co-operative Group.
Usdaw national official John Gorle said union members had been told that the shops were to cease trading.
The Renfrewshire South constituency congratulated the members and representatives of Usdaw on the union's Freedom From Fear Campaign .
The shopworkers' union, Usdaw, has urged the government to introduce legislation to prevent shops being allowed to open on Christmas Day.
Usdaw said MPs who had voted for the changes should "never again have the gall" to say they put victims first.
John Gorle of the Usdaw union said Vion's decision had "come of the blue" and would be a "real shock" for its workforce.
The Usdaw union said the tribunal ruling that stores which had fewer than 20 staff did not have to compensate them was "plainly wrong".
Joanne McGuiness, national officer of Usdaw, said it was "absolutely devastating news for our members, their families and for the economy of Milton Keynes".
Retail union Usdaw is seeking talks with the owner of clothing chain Ethel Austin over fears it could go into administration for the fifth time.
But union Usdaw described the announcement as "devastating" for those involved.
This is something, Maureen Bowen, from shop workers union Usdaw, supports.
Joanne McGuinness, national officer of shopworkers' union Usdaw, said staff would feel understandably angry at the award of big bonuses to directors when many were not getting a pay rise themselves this year.
Usdaw hopes that its members will have more of a say in company affairs and that more non-Usdawites (who make up just under half of Tesco's employees) will want to join the union in order to increase their influence in the company.
Mr Henry said unions like Union of Shop, Distributive and Allied Workers (Usdaw) could not understand why Holyrood had found the law inadequate to protect nurses, doctors and policemen, but adequate to protect retail staff and public workers like bus drivers and housing workers.
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