Miner Liam Fradgley fears he could lose everything if Kellingley Colliery closes.
Mr Fradgley, 25, whose son Lucas celebrates his first birthday next week, was one of nine apprentices to leave their previous jobs to take up work at the Weeland Road site.
He claims he was promised a long career at the site when he started in January.
He said: “They said there were up to 25 years of resources left at Kellingley, which would have taken me through to 50.
“We found out my partner Kirsty was pregnant while I was waiting to hear from UK Coal after the interview and we’ve just bought our first house.
“But I could lose everything if I lose my job. Kirsty only works part-time and there would only be her wage coming in which we simply wouldn’t be able to live on.”
Mr Fradgley and the other apprentices were originally due to start at Kellingley in January 2013.
But after a fire at Daw Mill Colliery in Warwickshire, UK Coal were forced to move their start dates back.
Mr Fradgley added: “I thought there was some stability at working down the pits. A lot of my family were miners and it’s the happiest I have been in my job.
“It’s really worrying and could have a huge impact on a lot of people. I just hope something can be done to save the pit.”