The main reasons for the contractor's delay in the construction period are:
1, the project management is chaotic and the technical force is weak. From the influence of contractor's own management level. The situation in the construction site is ever-changing. If the contractor's construction scheme is improper, the plan is not careful, the management is not perfect, and the problem is not solved in time, it will affect the construction progress of the project.
2. The low quality of migrant workers recruited leads to constant disputes.
3, weak financial strength or misappropriation of project funds, arrears of wages of migrant workers, material suppliers, so that workers delay their work, material suppliers do not provide materials in time.
4. Subcontract at different levels.
5. The way of winning the bid at a low price and claiming for compensation at a high price leads to uncontrollable costs and is difficult to complete.