49 CFR §382.703

1. (a)No employer may query the Clearinghouse to determine whether a record exists for any particular driver without first obtaining that driver's written or electronic consent. The employer conducting the search must retain the consent for 3 years from the date of the last query.
2. (b)Before the employer may access information contained in the driver's Clearinghouse record, the driver must submit electronic consent through the Clearinghouse granting the employer access to the following specific records:
   1. (1)A verified positive, adulterated, or substituted controlled substances test result;
   2. (2)An alcohol confirmation test with a concentration of 0.04 or higher;
   3. (3)A refusal to submit to a test in violation of § 382.211;
   4. (4)An employer's report of actual knowledge, as defined at § 382.107, of:
      1. (i)On duty alcohol use pursuant to § 382.205;
      2. (ii)Pre-duty alcohol use pursuant to § 382.207;
      3. (iii)Alcohol use following an accident pursuant to § 382.209; and
      4. (iv)Controlled substance use pursuant to § 382.213;
   5. (5)A SAP report of the successful completion of the return-to-duty process;
   6. (6)A negative return-to-duty test; and
   7. (7)An employer's report of completion of follow-up testing.
3. (c)No employer may permit a driver to perform a safety-sensitive function if the driver refuses to grant the consent required by paragraph (a) or (b) of this section.
4. (d)A driver granting consent under this section must provide consent electronically to the Agency through the Clearinghouse prior to release of information to an employer in accordance with § 382.701(a)(2) or (b)(3).
5. (e)A driver granting consent under this section grants consent for the Agency to release information to an employer in accordance with § 382.701(c).