Britain is due to leave the European Union in 64 days, and with Prime Minister Theresa May failing to win support for her negotiated deal, companies are increasingly anxious about the possibility of a chaotic Brexit.
"This applies especially to the backstop", he said.
The Sun newspaper said Northern Ireland's Democratic Unionist Party had privately made a decision to back May's deal in parliament if it included a clear time limit to the "backstop", a provision to prevent routine checks on the Irish land border.
But British eurosceptics objected to a so-called "backstop" in the deal that binds Britain into an EU customs union until new trading ties are agreed. "They are wrong", Enders said.
Media captionWhat happens in the event of no deal?
The Taoiseach added: "People who say they're against a hard border and also against a backstop".
Brexit Minister Chris Heaton-Harris said: "It does beg the reply that why on earth is he not then backing the deal that delivers the certainty all of those businesses he named have asked for?"
Fellow carmaker Jaguar Land Rover also said in a statement it would pause production in Britain for a week after the March 29 departure date "due to potential Brexit disruption", whatever the outcome.
Chancellor Philip Hammond has warned that leaving the European Union without a deal would be a betrayal of the people who voted Leave in the dream of a better future.
First, doing so gives business and the country certainty to plan for the future as it gets rid of the uncertainty caused by the withdrawal agreement.
"We, along with many of our peers, have repeatedly called for clarity". "We can't make any compromises on the fundamental principles".
The spokesman said: "President Juncker once again emphasised full solidarity with Ireland".
"The more access you have to Single Market, the less damage Brexit will do to your economy".
DUP deputy leader Nigels Dodds has warned the Irish premier to "tone down his rhetoric" over Brexit.
Mr Dodds called it a "new and more realistic approach" and "a long way from the dramatic language European Union spokespeople were using this time last year".
But she added: "Unfortunately we are rolling ever closer to the edge of a cliff".
The deal will replicate the terms of the EU's insurance agreement with Switzerland and will take effect once the current EU-Swiss direct insurance agreement ceases to apply to the UK.
"They'd have to take it out lock, stock and barrel".
Media captionReality Check unpacks the basics of the backstop.
She has rejected demands to rule out a no-deal scenario, saying that this can only be avoided by agreeing a deal or delaying Brexit, which she says she does not plan to do. So what's the point of the risking the entire Brexit deal by insisting on the backstop?
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