1. Healthy workplace tax credit (a) In general In the case of an employer, there shall be allowed as a credit against applicable employment taxes for each calendar quarter an amount equal to 50 percent of the sum of— (1) the qualified employee protection expenses paid or incurred by the employer during such calendar quarter, (2) the qualified workplace reconfiguration expenses paid or incurred by the employer during such calendar quarter, and (3) the qualified workplace technology expenses paid or incurred by the employer during such calendar quarter. (b) Limitations and refundability (1) Overall dollar limitation on credit (A) In general The amount of the credit allowed under subsection (a) with respect to any employer for any calendar quarter shall not exceed the excess (if any) of— (i) the applicable dollar limit with respect to such employer for such calendar quarter, over (ii) the aggregate credits allowed under subsection (a) with respect to such employer for all preceding calendar quarters. (B) Applicable dollar limit The term applicable dollar limit means, with respect to any employer for any calendar quarter, the sum of— (i) $1,000, multiplied so much of the average number of employees employed by such employer during such calendar quarter as does not exceed 500, plus (ii) $750, multiplied by so much of such average number of employees as exceeds 500 but does not exceed 1,000, plus (iii) $500, multiplied by so much of such average number of employees as exceeds 1,000. (2) Credit limited to employment taxes The credit allowed by subsection (a) with respect to any calendar quarter shall not exceed the applicable employment taxes (reduced by any credits allowed under subsections (e) and (f) of section 3111 of the Internal Revenue Code of 1986, sections 7001 and 7003 of the Families First Coronavirus Response Act, and section 2301 of the CARES Act) on the wages paid with respect to the employment of all the employees of the eligible employer for such calendar quarter. (3) Refundability of excess credit (A)