Legally, there is hardly any difference between wages and salary. In fact, by whatever name called, any remuneration paid to an employee will be treated as 'salary' or 'wages'. However, separate treatment is needed in accounts to show the factory cost, cost of production, and the like. Therefore, remuneration paid to employees who are directly involved in production and whose services can be attributed directly to a cost center are taken as 'wages' or labor cost (in Cost Sheet). Remuneration paid to clerical staff, supervisors, managers, etc., whose duty is to supervise a team of employees, are taken as 'salary' (included in administrative overhead). In final accounts, wages will be shown as debited to Trading A/C, whereas salary will be debited to Profit & Loss A/C.
There can also be a presumption that amounts paid piece-rate or on a daily basis are treated as wages, and amounts paid on a monthly basis are treated as salary. Similarly, wages may be variable, depending upon the unit of production, and as such, it will be a direct/variable cost, whereas salary will be fixed and common for the entire units of production. Moreover, the above classification will have a bearing mainly in manufacturing units and not in the service industry.
Regards,
Madhu.T.K