A food park is to be expanded as part of a £25m investment in new development sites in Carmarthenshire.
The new Dawn Pac factory at Cross Hands Food Park
Announcing the money on Monday, the county council said it will safeguard and create in excess of 1,000 jobs.
The investment, made up of public and private funds, will see new units built at the food park in Cross Hands, home to firms including Dawn Pac.
New roads, workshops, offices and industrial units will also be built in Llanelli, Ammanford and Carmarthen.
Meat packing company Dawn Pac is one of the first businesses to set up at the food park.
The company looked as if it would be forced to leave the area two years ago following a serious fire at its factory.
But it is now back in business and, as well as reinstating the 180 workforce employed before the blaze, it has expansion plans to eventually create up to 500 posts.
The council says it has been approached by several other food enterprises interested in moving to the area.
Executive board member for regeneration, Clive Scourfield, said: "What this investment does is safeguard the jobs that we have managed to get here and encourage other businesses to the area.
"What I'm looking for is sustainable jobs that can be brought into the area - hopefully there will be some well-paid jobs but let's get them here first.
Councillor Clive Scourfield said the money will create real jobs
"The labour force is quite adaptable and there is a certain level of unemployment which I hope can be resolved."
He said the council's involvement with securing Dawn Pac's future in Carmarthenshire showed that the investment would create real jobs.
"After the fire two years ago, there was a real fear that Dawn Pac might leave the area and relocate elsewhere," he said.
"I'm glad to say that they have shown faith in the area and stayed."
Carmarthenshire council is putting in £6m and the WDA more than £7m.
Five million pounds is coming from the private sector, over £3m from the Welsh Assembly Government and £2.5m from Objective One European funding.
It will create more than 350,000 sq ft of floor space concentrated at growth sites in Carmarthenshire.
Among them will be new food units at Cross Hands and workshops at Trostre in Llanelli.
Welsh assembly minister for economic development, Andrew Davies, said: "We are creating and securing jobs and advancing Wales' reputation as a country with increasing economic potential."