As many of the legislations of Punjab apply in Haryana mutatis mutandis, the applicability of the Punjab Labour Welfare Fund Act is as follows:
Applicability of the Act
This Act is applicable to a factory as defined in clause (m) of section 2 of the Factories Act, 1948, or any place which is deemed to be a factory under subsection (2) of section 85 of that Act. It includes any premises, including the precincts thereof, wherein and in any part of which any industry within the meaning of clause (j) of section 2 of the Industrial Dispute Act, 1947, is carried on. It also includes a shop or a commercial establishment within the meaning of the Punjab Shops and Commercial Establishment Act, 1958, in which, on any day, ten or more employees are employed or were employed during the preceding twelve months.
Please examine whether the establishment in Haryana fulfills the criteria of at least 10 employees. If so, sooner or later, you may be made liable to pay LWF; otherwise, there is no need.