"I met Rob on one of the first weekends after I came back," he says.
"A month later I saw him again. I had been travelling around New Zealand. He said, 'What are you doing next weekend?' I said, 'Nothing.' He said, 'Bring your tool bag along."'
His basic hand tools cost him $1500. Since starting he has bought more power tools and reckons his kit has now cost him $4000 all-up.
But he was also lucky that Mr Gardien's two small businesses, Gardien Construction and Flashman, kept steady work through the recession because of a reputation built up over 27 years.
Mr Gardien has always had at least one apprentice and trains them well because they are part of that reputation.
"I don't see Ben as my apprentice," he says. "I see him as my leading hand and my foreman at some stage."
Mr Bersma got the chance to work in every aspect of the job - a chance he might not have got with a different boss.
"I spent three months digging footings before I went to England," he said. He quit. Friends in other companies still "struggle to get to the next level without the right experience".
The apprenticeship involves recording all your practical work as well as completing theory work. The BCITO offers help with the theory, but Mr Bersma coped by himself with help from Mr Gardien.
The series
Monday: Our mismatched skills
Yesterday: Vocational pathways
Today: Industry training
Tomorrow: Second-chance education
Friday: Tertiary education.