In addition to the health care coverage plans offered under s. 40.51 (6), beginning on January 1, 2015, the group insurance board shall offer to all state employees the option of receiving health care coverage through a high-deductible health plan and the establishment of a health savings account. Under this option, each employee shall receive health care coverage through a high-deductible health plan. The state shall make contributions into each employee’s health savings account in an amount specified by the administrator of the division of personnel management in the department of administration under s. 40.05 (4) (ah) 4. In designing a high-deductible health plan, the group insurance board shall ensure that the plan may be used in conjunction with a health savings account.