Where can cement workers find reliable jobs?

Where to find a reliable job? Actually, we can't control this either. We thought we could find a job by some means, but the last job was not very good. How to solve it at this time is a problem. Cement workers want to find a good job, we must see whether the company is formal or not. We usually use on-site clerks to calculate wages and leave evidence. We will never meet a good boss, so be careful.