Sexual orientation can be defined as:

• Orientation towards persons of the same sex (homosexual)
• Orientation towards persons of the other sex (heterosexual)
• Orientation towards persons of the same and the other sex (bisexual)

Note: The term ‘Homosexual,’ is now no longer considered acceptable in many countries. Thus ‘Lesbian’ and ‘Gay’ are preferable.

Here is an article explaining how there has been progress made in LGBT rights in India, but that there is still some way to go towards true equality.

You should not:

• Discriminate indirectly against anyone – that is, to apply a criterion, provision or practice which disadvantages people of a particular sexual orientation unless it can be objectively justified
• Subject someone to harassment. Harassment is unwanted conduct that violates a person’s dignity or creates an intimidating, hostile, degrading, humiliating or offensive environment for them.
• Victimize someone because they have made or intend to make a complaint or allegation or have given or intend to give evidence in relation to a complaint of discrimination on grounds of sexual orientation
• Discriminate against someone, in certain circumstances, after the working relationship has ended.