Fasting during Ramadan is obligatory upon us and social pressure is not among the reasons for which you are allowed not to fast.
As you can see excerpted from this answer.
Fasting in Ramadaan is one of the pillars on which Islam is built.
Allaah tells us that He has prescribed it for the believers of this
ummah [nation], as He prescribed it for those who came before them.
Allaah says (interpretation of the meaning):
“O you who believe! Observing As-Sawm (the fasting) is prescribed for
you as it was prescribed for those before you, that you may become
Al-Muttaqoon (the pious”
“The month of Ramadan in which was revealed the Qur’aan, a guidance
for mankind and clear proofs for the guidance and the criterion
(between right and wrong). So whoever of you sights (the crescent on
the first night of) the month (of Ramadan i.e. is present at his
home), he must observe Sawm (fasts) that month, and whoever is ill or
on a journey, the same number [of days which one did not observe Sawm
(fasts) must be made up] from other days. Allaah intends for you ease,
and He does not want to make things difficult for you. (He wants that
you) must complete the same number (of days), and that you must
magnify Allaah [i.e. to say Takbeer (Allaahu Akbar: Allaah is the Most
Great)] for having guided you so that you may be grateful to Him”
Al-Bukhaari and Muslim narrated that Ibn ‘Umar (may Allaah be pleased
with him) said: The Messenger of Allaah (peace and blessings of Allaah
be upon him) said: “Islam is built on five (pillars): the testimony
that there is no god but Allaah and Muhammad is the Messenger of
Allaah; establishing prayer; paying zakaah; Hajj; and fasting
Whoever does not fast has abandoned one of the pillars of Islam, and
is committing a grave major sin. Indeed some of the salaf were of the
view that he is a kaafir [disbeliever] and apostate – we seek refuge
with Allaah from that.
Also excerpted from here.
Regarding sickness, most of the scholars – including the four imams –
are of the view that the sick person is not allowed to break his fast
in Ramadaan unless the sickness is severe.
What is meant by severe sickness is:
- The sickness will be made worse by fasting
- Recovery will be delayed by fasting
- Fasting will cause intense hardship, even if it does not make the sickness worse or delay recovery
- The scholars also included those who fear that they may become sick because of fasting.
Please see this for details on the above one.
So, as you can see, you will have to explain your situation to your coworkers and keep fasting. If they fail to understand, please keep silent and keep fasting.
May Allah Subhanatawala give us the best.