While calculating the earnings in illustration 3,Why employer's contribution was not added to workers
Earnings of workers doesn't include employer's contribution because employer's contribution to ESI or PF goes to the account of ESI or PF . The worker don't get those earnings including with wages.
Yeah then why in the first illustration employer's contribution was added to Earnings of employee?
In illustration 1 they have asked to calculate Effective Hourly Rate. Effective hourly rate is calculated for the purpose of the company. For company employer's contribution is an expense but for the employee it is not an income. In illustration 5 while calculating expenses to the company we will add employer's contribution because it is expense to the company.