Credit Agreement	12 Months Ended
Dec. 28, 2019
Credit Agreement
Credit Agreement	13. Credit Agreement CRA is party to an amended and restated credit agreement that provides CRA with a $125.0 million revolving credit facility and a $15.0 million sublimit for the issuance of letters of credit. CRA may use the proceeds of the revolving credit facility to provide working capital and for other general corporate purposes. CRA may repay any borrowings under the revolving credit facility at any time, but must repay all borrowings no later than October 24, 2022. There were no borrowings outstanding under this revolving credit facility as of December 28, 2019 or December 29, 2018. As of December 28, 2019, the amount available under this revolving credit facility was reduced by certain letters of credit outstanding, which amounted to $4.4 million and are in support of minimum future lease payments under leases for permanent office space. Borrowings under the revolving credit facility bear interest at a rate per annum, at CRA’s election, of either (i) the adjusted base rate, as defined in the credit agreement, plus an applicable margin, which varies between 0.25% and 1.25% depending on CRA’s total leverage ratio as determined under the credit agreement, or (ii) the adjusted eurocurrency rate, as defined in the credit agreement, plus an applicable margin, which varies between 1.25% and 2.25% depending on CRA’s total leverage ratio. CRA is required to pay a fee on the unused portion of the revolving credit facility at a rate per annum that varies between 0.20% and 0.35% depending on its total leverage ratio. Borrowings under the revolving credit facility are secured by 100% of the stock of certain of CRA’s U.S. subsidiaries and 65% of the stock of certain of its foreign subsidiaries, which represent approximately $32.9 million and $29.1 million in net assets as of December 28, 2019 and December 29, 2018, respectively. Under the credit agreement, CRA must comply with various financial and non‑financial covenants. Compliance with these financial covenants is tested on a fiscal quarterly basis. Any indebtedness outstanding under the revolving credit facility may become immediately due and payable upon the occurrence of stated events of default, including CRA’s failure to pay principal, interest or fees or a violation of any financial covenant. The financial covenants require CRA to maintain an adjusted consolidated EBITDA to consolidated interest expense ratio of more than 2.5:1.0 and to comply with a consolidated debt to adjusted consolidated EBITDA ratio of not more than 3.0:1.0. The non‑financial covenant restrictions of the senior credit agreement include, but are not limited to, CRA’s ability to incur additional indebtedness, engage in acquisitions or dispositions, and enter into business combinations. As of December 28, 2019, CRA was in compliance with the covenants of its credit agreement.

13. Credit Agreement

CRA is party to an amended and restated credit agreement that provides CRA with a $125.0 million revolving credit facility and a $15.0 million sublimit for the issuance of letters of credit. CRA may use the proceeds of the revolving credit facility to provide working capital and for other general corporate purposes. CRA may repay any borrowings under the revolving credit facility at any time, but must repay all borrowings no later than October 24, 2022. There were no borrowings outstanding under this revolving credit facility as of December 28, 2019 or December 29, 2018.

As of December 28, 2019, the amount available under this revolving credit facility was reduced by certain letters of credit outstanding, which amounted to $4.4 million and are in support of minimum future lease payments under leases for permanent office space. Borrowings under the revolving credit facility bear interest at a rate per annum, at CRA’s election, of either (i) the adjusted base rate, as defined in the credit agreement, plus an applicable margin, which varies between 0.25% and 1.25% depending on CRA’s total leverage ratio as determined under the credit agreement, or (ii) the adjusted eurocurrency rate, as defined in the credit agreement, plus an applicable margin, which varies between 1.25% and 2.25% depending on CRA’s total leverage ratio. CRA is required to pay a fee on the unused portion of the revolving credit facility at a rate per annum that varies between 0.20% and 0.35% depending on its total leverage ratio. Borrowings under the revolving credit facility are secured by 100% of the stock of certain of CRA’s U.S. subsidiaries and 65% of the stock of certain of its foreign subsidiaries, which represent approximately $32.9 million and $29.1 million in net assets as of December 28, 2019 and December 29, 2018, respectively.

Under the credit agreement, CRA must comply with various financial and non‑financial covenants. Compliance with these financial covenants is tested on a fiscal quarterly basis. Any indebtedness outstanding under the revolving credit facility may become immediately due and payable upon the occurrence of stated events of default, including CRA’s failure to pay principal, interest or fees or a violation of any financial covenant. The financial covenants require CRA to maintain an adjusted consolidated EBITDA to consolidated interest expense ratio of more than 2.5:1.0 and to comply with a consolidated debt to adjusted consolidated EBITDA ratio of not more than 3.0:1.0. The non‑financial covenant restrictions of the senior credit agreement include, but are not limited to, CRA’s ability to incur additional indebtedness, engage in acquisitions or dispositions, and enter into business combinations. As of December 28, 2019, CRA was in compliance with the covenants of its credit agreement.