Dual degree regular courses

How did he attend both LLB and PG classes?

is valid to pursue two degree programs simultaneously in India, according to UGC guidelines. The University Grants Commission (UGC) allows students to pursue two academic programs concurrently, provided certain conditions are met. This can be done in physical mode, online mode, or a combination of both. Students can choose to pursue one degree in a physical (regular) mode and another in Open and Distance Learning (ODL) or online mode. They can also pursue two ODL/online programs concurrently. 

UGC guidelines for pursuing duel academic programme are:

1.A student can pursue two full time academic programmes in physical mode provided that in such cases, class timings for one programme do not overlap with the class timings of the other programme.
2. A student can pursue two academic programmes, one in full time physical mode and another in Open and Distance Learning (ODL)/Online mode; or up to two ODL/Online programmes simultaneously.
3. Degree or diploma programmes under ODL/Online mode shall be pursued with only such HEIs which are recognized by UGC/Statutory Council/Govt. of India for running such programmes.
4. Degree or diploma programmes under these guidelines shall be governed by the Regulations notified by the UGC and also the respective statutory/ professional councils, wherever applicable.
5. These guidelines shall come into effect from the date of their notification by the UGC. No retrospective benefit can be claimed by the students who have already done two academic programmes simultaneously prior to the notification of these guidelines.

The above guidelines shall be applicable only to the students pursuing academic programmes other than Ph.D. programme. 

The given facts do not disclose any impropriety.

Has the employer initiated any action of the allged complaint? if not, why this query?

You have not even disclosed whether employer is Govt or not.