My company and union is going to negotiations my company is asking to take away seniority rights, cut our wages five dollars, mandatory overtime. They won't negotiate, I fear the worst. I have six years there, in the plastic industry, I'm 45 without a degree what should I'd do?

I'm currently a software tester and have been one for about 5 years now. I have grown very tired of office/computer work. I really enjoy doing construction; especially interior work like painting or ceramic tiling. I helped my father before he retired doing lots of different interior as well as exterior construction-type work but I wouldn't classify myself as an expert. I have a family and make in the mid-40's per year but I would risk walking away from my computer job if I could take a construction job that paid fairly close to my current salary. I just can't risk my income for a chance at a construction position unless it was close to my current income and worthwhile. I know that may sound strange but I hold the responsibility of a decent income to my family of high importance. Here's my question: What are the chances of anyone hiring a "willing to learn" hard-working, dedicated, construction apprentice, close to my current salary? I would say in all I have more than 10 years experience but it hasn't been every day on the job experience. My experience has been mostly 3-4 projects per year - sometimes more and sometimes less. Any information or insight would be greatly appreciated. Thank you!