With regard to the application of the provisions of Article 39 to a business that regularly employs 300 or fewer workers, the term "10 working days" in paragraph (1) of that Article is deemed to be replaced with "6 working days" until March 31, 1991, and the term "10 working days" in that paragraph is deemed to be replaced with "8 working days" from April 1, 1991 until March 31, 1994.