EOBI and Social Security: When Your Obligations Actually Start

Every founder eventually asks the question, usually in year three or four: "When do we actually have to start with EOBI and social security?" The uncomfortable answer is that the question contains its own error. These obligations do not start when the employer decides to start them, or when an inspector appears, or when the company feels established enough to have a compliance function. They start when statutory facts occur — a headcount is crossed, an employee joins, an establishment opens — and they start silently, accruing liability from that date whether or not anyone registers. This briefing maps the trigger points as the law stands in July 2026. The thresholds, rates, and deadlines move with budgets and notifications, and every figure below is bracketed for confirmation against the current instruments.

Two schemes, and why conflating them costs money

Employers habitually speak of "EOBI and social security" as one obligation. They are two, under different laws, run by different institutions, funding different things — and satisfying one does nothing for the other.

EOBI is federal. The Employees' Old-Age Benefits Act, 1976 created a contributory scheme, administered by the Employees' Old-Age Benefits Institution, that pays old-age, invalidity, and survivors' pensions and old-age grants — deferred protection, decades away. Despite the constitutional questions devolution raised after the Eighteenth Amendment, the Institution continues to operate across all provinces and employers are expected to comply nationally [POST-DEVOLUTION STATUS — TO BE VERIFIED BY REVIEWING LAWYER].

Provincial social security is the older, nearer-term scheme. The Provincial Employees' Social Security Ordinance, 1965 lineage funds medical care and cash benefits — sickness, maternity, employment injury, survivorship — through employer-paid contributions to a provincial institution: PESSI in Punjab, SESSI in Sindh under the province's own re-enacted statute [SINDH INSTRUMENT — TO BE VERIFIED BY REVIEWING LAWYER], and the Khyber Pakhtunkhwa and Balochistan counterparts [INSTRUMENTS — TO BE VERIFIED BY REVIEWING LAWYER].

Two schemes means two establishment registrations, two sets of employee enrolments, two monthly payments, and two inspectorates. A company proudly current with EOBI can be years in arrears with SESSI, and frequently is.

The trigger is a fact you may not have noticed happening

Both frameworks are coverage-based, and coverage is self-executing. Under the 1976 Act, the obligation attaches when the establishment meets the statutory description — historically an employee-count threshold, amended downward over the years [CURRENT EOBI THRESHOLD — TO BE VERIFIED BY REVIEWING LAWYER]. The provincial schemes apply to establishments within the notified classes and headcounts of each province, and the notifications have long since extended past factories into ordinary commercial establishments [PROVINCIAL THRESHOLDS AND NOTIFIED CLASSES — TO BE VERIFIED BY REVIEWING LAWYER].

The legal significance of the trigger date is what employers underestimate. Liability runs from the day the threshold was crossed, not the day of registration. An employer that qualified in 2021 and registers in 2026 has not come into compliance; it has fixed the end point of a five-year arrears period, across every employee and every month, with statutory additions on top [SURCHARGE PROVISIONS — TO BE VERIFIED BY REVIEWING LAWYER]. Both institutions can assess from their own estimates where the employer's records are thin, and the burden of displacing an estimate sits with the employer. The single most valuable piece of homework in this area is therefore historical: identify, from your own payroll records, the month you first crossed each threshold. That date, not today's, is where your exposure begins.

The start dates employers invent for themselves

Four assumptions do most of the damage.

"It starts at confirmation." No. Enrolment obligations follow the start of employment. A probationer is an employee for these schemes from joining, and six months of unenrolled probationers per year compounds quietly across a growing headcount.

"It starts when we become industrial." No. The 1965 Ordinance lineage reads industrial, but provincial notifications have brought commercial establishments within coverage, and "employee" under the 1976 Act is wide — it does not track the workman concept, and it captures office staff, sales teams, and most salaried categories, subject to the statutes' specific exclusions [EXCLUDED CATEGORIES — TO BE VERIFIED BY REVIEWING LAWYER]. A software house or a services office is the standard profile in retrospective assessments precisely because it assumed the schemes were for factories.

"It starts when they contact us." No. Neither statute conditions the duty on the institution's knowledge. The inspector's visit is not the start of the obligation; it is the end of the period in which the employer controlled the narrative.

"Outsourced staff are the contractor's problem." Not reliably. Workers supplied through manpower contractors sit within the frameworks' reach, and principal employers have faced demands where the contractor failed to contribute [PRINCIPAL-EMPLOYER PROVISIONS — TO BE VERIFIED BY REVIEWING LAWYER]. If a contractor's people work at your establishment, obtain and verify contribution evidence rather than assuming it.

What actually begins when the trigger occurs

Crossing a threshold starts a stack of obligations, not one. The establishment must be registered with the relevant institution. Each covered employee must then be individually enrolled — EOBI registration linked to the CNIC, and enrolment of secured persons with the provincial institution — because pooled payments credited to nobody buy the workforce nothing. Monthly contributions then run: under the 1976 Act, an employer share and a smaller employee share computed on a notified wage base tied to the minimum wage — historically five per cent and one per cent [CURRENT RATES AND BASE — TO BE VERIFIED BY REVIEWING LAWYER] — and under the provincial schemes an employer-funded contribution, classically six per cent of wages subject to ceiling rules that the provinces have revised repeatedly [CURRENT RATES AND CEILINGS — TO BE VERIFIED BY REVIEWING LAWYER]. Each payment has a monthly deadline and a paper trail — the receipt and schedule reconciled against that month's payroll headcount [DEADLINES — TO BE VERIFIED BY REVIEWING LAWYER]. Joiners are enrolled before their first contribution falls due; leavers are reported the month they leave.

The second city restarts the clock

Growth re-triggers everything. Opening in a second province creates a new establishment under a different institution — a Karachi office answers to SESSI on Sindh's figures while the Lahore office answers to PESSI on Punjab's, and nothing about the Punjab registration travels. EOBI, being federal, continues across both, but the establishment-level registration questions arise afresh [MULTI-ESTABLISHMENT TREATMENT — TO BE VERIFIED BY REVIEWING LAWYER]. Each June, provincial budgets and minimum wage notifications move the wage bases and contribution figures, which means the trigger analysis is not a one-time exercise but an annual one.

The trigger table

Event in the company's life	What it triggers	Governing framework	Act on it that month
Headcount crosses the EOBI threshold [FIGURE — TO BE VERIFIED BY REVIEWING LAWYER]	Establishment registration; contributions from that date	Employees' Old-Age Benefits Act, 1976	Register the establishment; date the crossing in writing
Establishment falls within provincial coverage [THRESHOLDS — TO BE VERIFIED BY REVIEWING LAWYER]	Registration with PESSI, SESSI, or counterpart	Provincial Employees' Social Security Ordinance, 1965 lineage	Register; confirm the notified class and ceiling
Any covered employee joins	Individual enrolment before the first contribution	Both schemes	Enrol against verified CNIC details
Any employee leaves	Removal from the contribution rolls	Both schemes	Report the leaver; keep the trail
Contractor staff work at your establishment	Verification of the contractor's contributions	Both schemes [PROVISIONS — TO BE VERIFIED BY REVIEWING LAWYER]	Obtain contribution evidence in writing
An office opens in another province	A new establishment under a new institution	Provincial scheme of that province	Fresh registration; new rates and forms
June budget or minimum wage notification	Revised wage bases and contribution figures	Both schemes	Re-run the payroll arithmetic

What this means for you

Do the dating exercise before anyone does it for you: establish from payroll history when each establishment first met each threshold, and quantify the gap between that date and your registration date. If the gap is zero, document the analysis and move on. If it is not, the sequence matters — reconstruct the liability from your own records first, then approach the institutions on your numbers, with advice on the settlement posture, rather than waiting for an estimate you will have to displace. Assign each scheme a named owner, enrol probationers from joining, and put the June re-check in the compliance calendar. Our EOBI guide covers the monthly mechanics and enforcement in detail, and clients on our legal retainers have the trigger analysis and the annual re-check run for them as standing work. The schemes are cheap to comply with and expensive to discover late — and the discovery date is the only variable still in your control.