Solution:A casual worker is a worker on a temporary employment contract with generally limited entitlements to benefits and little or no security of employment. In January 2020, Supreme Court in Pawan Hans Ltd. & Ors. Vs Aviation Karmachari Sanghatana Case, held that employees (including casual workers) who draw wages or salaries directly or indirectly from a company are entitled to provident fund benefits un der the Employees Provident Fund (EPF) and Miscellaneous Provisions Act. Hence, statement 1 is correct.As per Code on Wages 2019, the Central or State Government may fix the number of hours that constitute a normal working day. In case employees (including casual workers)
work in excess of a normal working day, they will be entitled to overtime wages, which must be at least twice the normal rate of wages. Hence, statement 2 is correct. As per the Payment of Wages (Amendment) Act 2017, the
appropriate Government may, by notification in the Official Gazette, specify the industrial or other establishment, the employer of which shall pay to every person employed in such industrial or other establishment, the wages only by cheque or by crediting the wages in his bank account. Hence, Statement 3 is also correct.
Note: UPSC has given answer (b) for this question in its official answer key.