Answer : The workers in the unorganised sector need protection on the following issues: wages, safety and health. In the construction sector, labourers are employed on a daily basis. Hence, they have no job security. Here, wages too differ from time to time. Consequently, the government has set up a minimum wages act to protect such workers from economic exploitation.
The same problem exists for miners working in private mining companies. Their safety is secondary to the company's profits, and as a result, many miners suffer grievous injuries (and many a times, even die) due to inadequate safety gear and norms. Governments of most nations have now laid down strict rules for private enterprises to ensure workers' safety.
Most companies in the unorganised sector do not provide health insurance to their employees. Some of these might be involved in dangerous factory production that may harm a worker's health in the long term. These workers need to be protected against the tyranny of the employer, and it is here that the government steps in.