This document summarizes key sections of the Employees' Compensation Act pertaining to employer liability for work-related injuries and diseases. Section 3(1) outlines the four conditions for employer liability, including that an injury is caused to a workman in the course of employment and results in death, total or partial disability for over 3 days. Section 3(2) deals with occupational diseases, dividing them into parts A, B, and C based on required period of employment. Section 3(2A) allows the commissioner to assign responsibility for compensation between multiple employers. Section 3(3) discusses government notification procedures for applying Schedule III. Section 3(4) limits liability to diseases directly resulting from work injuries. Section 3(5)